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User guide

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This guide walks you through the setup process, key features, and best practices for the ActivForce 2 device and accompanying mobile app & web dashboard.

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user guide

About This Manual

This User Guide provides instructions for the safe and effective use of the ActivForce 2 device, the ActivForce mobile application, and the ActivForce web dashboard. It is intended to help you set up the system, perform strength and range of motion measurements, interpret test results, and maintain the device and its accessories.

Warnings, Cautions and Notes

Always use this manual in conjunction with any applicable local regulations, institutional policies, and professional guidelines. If anything in this manual is unclear or if you have questions about the use of the ActivForce system, contact ActivBody customer support before proceeding.

W000

Warnings indicate a risk of injury.

C000

Cautions indicate a risk of damage to the system, a risk of damage to the equipment or a risk of incorrect measurements.

N000

A note provides extra information.

Intended Use

The ActivForce 2 system is intended to measure and document isometric muscle strength and joint range of motion to support the assessment of neuromuscular function. It is a measurement tool that provides objective data to aid in the evaluation of medical conditions, but does not provide a standalone automated diagnosis.

Indications for Use

The device is indicated for use in clinical, rehabilitation, and sports medicine settings. It aids trained professionals in establishing baselines, monitoring neuromuscular function, and evaluating patient response to therapeutic interventions.

Intended Users

The ActivForce 2 system is intended to be used by trained adults such as licensed healthcare professionals (e.g., physical therapists, physicians, chiropractors), rehabilitation and sports medicine clinicians, and other qualified personnel who are experienced in musculoskeletal assessment and have received instruction in the proper use of the device and app.

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The instructions in this manual are solely intended for the mentioned users.

Contact and Fixation Accessories

W001

Do not use any contact or fixation accessory (Rounded Pad, Arched Pad, Hand Strap, Leg Strap, Immobilization Belt, Comfort Pack, Belt, Belt Loop Plate, Silicone Cover, Foam Insert) on body areas with:

  • Open wounds, ulcers, or surgical incisions at the intended contact site
  • Fragile, severely compromised, or very thin skin (e.g., severe eczema, steroid-thinned skin)
  • Burns, active skin infections, or significant dermatological conditions at the contact site
  • Skin that is damaged, irritated, or otherwise not healthy

W002

Do not use the device or accessories if the user and/or subject has a known allergy to silicone or plastic materials.

W003

Do not use the device or accessories if you observe any allergic reaction when in contact with the patient.

Body Regions and Underlying Conditions

W004

Do not use pads, straps, or belts on body regions where:

  • Isometric muscle testing or resisted exercise is contraindicated (e.g., acute fracture, unstable joint, immediately post-operative area)
  • Localized compression may aggravate an underlying condition (e.g., severe edema, acute soft-tissue injury)

Use of Straps, Belts, and Belt-Based Configurations

W005

Do not apply Hand Strap, Leg Strap, Immobilization Belt, or Belt Loop Plate configurations on:

  • Limbs with known or suspected deep vein thrombosis (DVT)
  • Limbs or regions with severe arterial or venous insufficiency or other serious vascular disease
  • Chest or abdomen of patients where circumferential compression may compromise breathing or organ function
    (e.g., severe cardiopulmonary disease, significant hernias, recent thoracic/abdominal surgery)

Do not place the buckle of a strap or belt against

  • Body regions
  • Hard surfaces

Do not use straps or belts at tension levels that:

  • Cause pain, burning, numbness, tingling, or unusual discomfort
  • Produce visible discoloration, swelling, or other signs of impaired circulation
  • Cannot be adequately monitored in patients who are unable to communicate pain or discomfort

Accessory Fit and Device Condition

W006

Do not use any accessory setup when:

  • Safe joint angles, posture, and stabilization cannot be achieved or maintained
  • The plate, pad, strap, belt, or device cannot be securely attached and checked before force application
  • There is a risk of sudden release, slipping, or uncontrolled movement of the device or accessory

Do not use the ActivForce 2 device if:

  • The device, attached pad, or device accessories are visibly damaged
  • The attached pad is not securely locked into position

Environmental Conditions

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Do not use the device in environments with excessive heat, humidity, or pressure outside the specified operating conditions

Limited Warranty

ActivBody, Inc. (“ActivBody”) provides a limited warranty to the original purchaser that the ActivForce 2 device and supplied accessories will be free from material defects in materials and workmanship under normal use for one (1) year from the date of purchase, unless a different period is required by applicable law or stated in your purchase documentation.

ActivBody’s sole obligation, and your exclusive remedy under this warranty, is repair, replacement, or refund of the product (at ActivBody’s discretion) if a covered defect is confirmed.

This warranty does not cover normal wear and tear, consumables (including batteries), cosmetic damage, or damage caused by misuse, abuse, accident, unauthorized modification or repair, use with non-ActivBody accessories, or use not in accordance with this manual.

To the maximum extent permitted by law, this limited warranty is provided in place of all other express or implied warranties, including implied warranties of merchantability and fitness for a particular purpose, and ActivBody’s liability is limited to the amount paid for the product. Rights may vary depending on your jurisdiction.

ActivForce Kit Components

ActivForce 2 Device

ActivForce Mobile Application

ActivForce Dashboard

Rounded Pad

Arched Pad

Foam insert

Silicone Cover

Hand Strap

Leg Strap

Belt

Belt Loop Plate

Carrying Case

Connecting the Device to the Mobile Application

Step 1

Turn on the device by pressing and holding the device button until you see a blue LED flashing. A BLUE flashing light indicates that the ActivForce 2 device is available for a Bluetooth® connection to the companion mobile application.

Step 2

Bluetooth needs to be turned ON for the phone or tablet. If it is OFF, the app will remind you to turn it ON.

Step 3

In the ActivForce app, start a measurement or select “Device Connection” in the “My Profile” screen, which can be found by opening the sidebar menu. A list of available devices will be shown in the app under “Available Devices”. Tap on the device name that corresponds to your ActivForce 2 device.

Step 4

The app will display a “Connecting” message while the connection is being established.

Step 5

When the Bluetooth connection is successfully established, the device LED will flash green periodically. A GREEN flashing light indicates the ActivForce 2 device is connected to the companion mobile application.

Step 6

Close the connection pop-up by tapping either on the “Done” or “X” button.

Step 7

The app offers two main types of tests and associated reports:
a. Force Measurements: Strength tests with left, right and N/A side options that report measurements in pounds, kilograms, or Newtons.
b. Range of Motion Measurements: ROM tests with left, right and N/A side options to obtain angle measurements in 3D space.
c. “Test Settings” menu is available in the sidebar to set test parameters, such as separate test duration settings for Strength and ROM test, and force measurement units.

Step 8

Turn off the device by pressing and holding the button until you see a red LED blink.
A single RED flash indicates that the device has been turned off.
Multiple RED continuous flashing lights indicate a low battery charge level and that the battery needs replacement. 

N001

Always start the app and pair the device through the in-app “Connect” dialog in the app. Pairing the device through your mobile device’s Settings screen without pairing in the app will result in an error. If a pairing error occurs: close the app, turn off Bluetooth in your device’s Settings, turn Bluetooth back on, and pair the device again through the app.

N002

On Android, additional permissions are required to connect an ActivForce device. Depending on the Android OS version, the app may request that the user allow the following permissions:

  • Location and Location Accuracy (Android 10 and 11)
  • Nearby Devices (Android 12 and newer)

Downloading the Application

You can download the ActivForce mobile application from the Apple App Store and Google Play Store.

Creating an Account

Step 1

If you’re using ActivForce for the first time, you will need to create an account. Enter your email address, choose a password, and press “Create Account”.

Step 2

Review and accept the terms and conditions as well as the privacy agreement. This takes you to the Onboarding where you can select default test settings.

Selecting Default Settings

Step 1

If it is your first time using the app (whether you’re a new user or an existing AF2 user), you will see a "Welcome to ActivForce" screen that will lead you to set the default test settings. Tap “Get Started” to proceed and configure your profile and the test settings.

Step 2

First, you can add details for your profile, such as First and Last name, and the Organization you are associated with. 

Step 3

Next, you can select the test duration individually for Strength and Range of Motion measurements. The mobile application allows you to select a duration between 1 and 60 seconds.

Step 4

After that, you need to set your preferred unit of measurement: Imperial (lb), Metric (kg), Newton (N).

Step 5

The app will ask you if you would like to allow the sharing of anonymous data to help improve ActivForce.

Step 6

Finally, you will receive a one-time prompt to receive news about ActivForce updates, features, and education resources via e-mail.

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The profile details can be updated later from the “My Profile” menu.

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Test settings can be updated at any time in the “Test Settings” menu.

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Providing profile details is optional and can be skipped.

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You can opt-in or opt-out at any time from the “Privacy” menu in “My Profile”.

Signing In

Step 1

If you already have an ActivForce account, enter your email address and password to sign in. If you don’t remember your password, click on the “Forgot password?” link. The onboarding will be shown the first time you sign in to the app.

Home Screen

Step 1

Upon signing in, you will see the ActivForce home screen. 

Step 2

Measurements can be started by tapping the “Start Test” button. Before each measurement, the test type (Strength or ROM) and other Test Configuration properties can be set. 

Step 3

By opening the sidebar menu, you can customize various settings such as test duration, measurement units, the app’s theme and language, and others.

Step 4

For quick access, the home screen will show the last three saved reports. Upon tapping any of the recent test series, full details will be displayed.

A link to the ActivForce dashboard which contains all test reports saved from the app is also presented on the home screen.

Test Configuration

Step 1

Upon tapping “Start Test” on the home screen, the user is presented with the option to choose the test type - Strength or Range of Motion. Other test configuration properties can also be set, like the test name, side and optionally joint, movement and position.

The test name is automatically populated with the number of the test in the current test series, but it can also be customized to the user’s preferences (up to 64 characters).

The user can also choose Joint, Movement and Position, which will generate a test name (if the default name wasn’t changed by the user before that) and the associated test illustrations will be added to the report.

The test side can be selected - Left, Right or N/A (if no side is applicable).

Step 2

Tapping “Start Test” on the Test Configuration will open the device connection screen (if no ActivForce 2 device is currently connected) or the test screen where the measurement can be started.

Strength Measurements

Step 1

To perform a Strength Test, tap on “Strength” in the Type section of the Test Configuration screen. Select which side you want to test - Left, Right or N/A (if no side is applicable).

Tap on “Start Test”.

Step 2

Once you reach the test screen, tap "Start Test" to begin the Strength measurement. A three-second calibration phase will start.

Step 3

Once the countdown timer ends, the test will begin and you can start applying force to the device. The applied force will be displayed on the vertical bar along with a horizontal target showing the currently reached peak force.

The test duration depends on the settings chosen in the “Test Settings” screen. The default is set to six seconds.

Step 4

After the strength test is completed, a screen will be shown which will contain a graph for the conducted measurement and key performance indicators, like the Peak Force and Time to Peak Force.

Step 5

This screen also allows you to either keep the result or repeat the test. Tapping “Redo Test” and confirming it will discard the current result and you will be redirected to the beginning of the Strength test where you can conduct the measurement again.

Tapping “Next” will show the Summary screen.

Step 6

The Summary screen contains the Peak Force and the Time to Peak (in seconds), which is how long it took to reach the Peak Force for that specific test. 

Tapping the test card will display the graph for the conducted measurement.

Step 7

The view contains the same information as the test review screen shown after the measurement - test name, a graph of the conducted test and the key performance indicators (Peak Force and Time to Peak).

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Do not press or move the device during calibration.

Range of Motion Measurements

Step 1

To perform a Range of Motion Test, tap on “ROM” in the Type section of the Test Configuration screen. Select which side you want to test - Left, Right or N/A (if no side is applicable).

Tap on “Start Test”.

Step 2

Once you reach the test screen, tap "Start Test" to begin ROM measurement. A three-second calibration phase will start.

Step 3

Once the countdown timer ends, the test will begin and you can start rotating the device. The circular gauge displays both your current angle and the maximum angle reached during the test.

Step 4

The test duration depends on the settings chosen in the “Test Settings” screen. The default is set to six seconds.

Step 5

After the ROM test is completed, a screen will be shown which will contain a graph for the conducted measurement and the reached Max Angle. 

Step 6

This screen also allows you to either keep the result or repeat the test. Tapping “Redo Test” and confirming it will discard the current result and you will be redirected to the beginning of the ROM test where you can conduct the measurement again. Tapping “Next” will show the Summary screen.

Step 7

The Summary screen contains the Max Angle reached for that specific test. Tapping the test card will display the graph for the conducted measurement.

Step 8

The view contains the same information as the test review screen shown after the measurement - test name, a graph of the conducted test and the Max Angle reached.

C003

Do not press or move the device during calibration.

C004

The ActivForce 2 device is capable of measuring angles in all three axes. However, only one angle in a single plane of motion should be measured during each test.

Test Summary

Step 1

The Test Summary screen displays results from all conducted tests in the same report.

To add a new test to the same report, tap the “Add Test” button which will open a new “Test Configuration” screen.

Step 2

Test reports can contain data from Strength tests, ROM tests, or a combination of both.

Step 3

Tap the three-dot icon "..."  next to the test name to access additional options. From the context menu you can: 

  • Edit Configuration - Allows you to rename the test, change the side, or select Joint, Movement, and Position.
  • Add Repetition - Repeat the last test configuration and save it as a new test, allowing you to compare results between each run. (more information in the section “Test Repetitions and Side Comparison”)
  • Test Right Side / Test Left Side - This option appears only when the selected test was conducted on the Left or Right side and allows you to do a new quick measurement for the opposite side, using the same test configuration. (more information in the section “Test Repetitions and Side Comparison”)
  • Redo Test - Allows you to replace the selected test result with a new measurement, using the same configuration.
  • Delete Test - Unwanted tests can be removed using this option. Deleted tests will not appear on the test report when you save your results.

Step 4

To save the test series, tap the “Save” button on the Summary screen. The Test Series name will be prepopulated but can also be changed. You can also add a Test Subject Identifier to help you find the specific report later.  Tap ‘Done’ to confirm the save.

Every test series will be saved on your currently signed in account and can be viewed by logging in with the same account on the ActivForce dashboard, available at https://activforce.activbody.com/.

Step 5

To discard tests from the Summary screen, tap the "Discard" button. After confirmation, the tests will be deleted.

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You can add up to 30 tests in a single report. Tests will appear in the order they were performed.

C005

Use anonymized identifiers due to privacy and security regulations.

C006

Reports that you do not save will be automatically discarded and cannot be restored

Test Repetitions

Step 1

To repeat a test with the same settings:

  1. Tap the three-dot menu icon next to your selected test
  2. Select "Add Repetition"
  3. Complete the new test measurement

When finished, you'll see a test review screen that compares results and graphs from both tests. You can repeat the same test multiple times to compare more results.

Step 2

Each repetition has Peak Force and Time to Peak. Under all repetitions, you can see the average Peak Force and Time to Peak results.

Range of Motion tests can also be repeated, and each repetition has the Max Angle reached. Under all repetitions, you can see the Average angle.

Tapping “Next” on the Test Review screen will save the measurement, and all tests can be reviewed again from the Summary screen.

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On the test review screen, you can also tap on the Repetition to change which test gets highlighted

Side comparison

Step 1

To compare results between sides, tap on the three-dot icon and after that “Test Right/Left Side”. This option is only shown for measurements completed with Left or Right side assigned. Upon finishing the measurement, the test review screen will be shown comparing the results and test graphs for both sides. 

Step 2

Each test has Peak Force and Time to Peak. Under the results, you can see the difference in the Peak Force between both sides, as well as the Percentage Difference. 

Range of Motion tests can also be compared, with Max Angle shown for both sides. Under the results, you can see the difference in degrees between both sides, as well as the percentage difference.

Tapping “Next” on the Test Review screen will save the measurement, and all tests can be reviewed again from the Summary screen.

N009

On the test review screen, you can also tap on the to change which test gets highlighted

Test Settings

Step 1

The test settings can be accessed from the Home screen by opening the sidebar menu and selecting “Test Settings”.

Force units for Strength measurements can be set in Imperial (lb), Metric (kg), or Newton (N). Additionally, test durations for Strength and ROM tests can be set separately.

N010

The default test duration is 5 seconds, but any duration between 1 and 60 seconds can be selected.

Profile

Step 1

The profile menu can be accessed from the Home screen by opening the sidebar menu and selecting “My Profile”.

My Profile screen allows you to:

  • Update the account details (First name, Last name and Organization)
  • Connect and calibrate devices, and toggle the automatic device connection to the app ON or OFF
  • Change the app’s theme (Light, Dark or System, which follows the OS preferences)
  • Choose the app’s language (English, German, Spanish, French, Italian, Japanese, Korean, Dutch and Portuguese (Brazil))
  • Change privacy settings (Enable or Disable Data Sharing)
  • Contact customer support
  • Access other functions

Step 2

Log out from the current ActivForce account by tapping the “Sign out” button in the sidebar menu. After signing out, the app will return to the welcome screen where you can sign in again.

Using the ActivForce Web Dashboard

Step 1

The ActivForce web dashboard, available at https://activforce.activbody.com, displays saved force and angle measurement test series. They are saved to the dashboard when you use the “Save” button on the ActivForce mobile application.

Sign in to the ActivForce web dashboard with the same email and password used in the ActivForce mobile application.

Step 2

After a successful sign-in, saved test reports will be displayed in the dashboard.

Step 3

Test reports in the dashboard contain all information recorded during the administration of the test. Each test report includes a graph that visualizes the entire test duration, helping better understand how the test was performed.

The test report can be renamed by tapping on the pencil icon.

Step 4

An illustration will also be available in the test report if a joint, movement, and position were selected when the test was performed.

Step 5

Subject details like identifier and weight can be added to each report. When weight is added, the test report card will display an additional Force-Weight Ratio comparison section.

Step 6

By selecting the “Copy Data” button the user can see a brief summary of the test series and copy it to their clipboard with the “Copy” button.

Every saved report can be printed or saved as a PDF by tapping the “Print/PDF” button.

Tracking Progress

Step 1

The user can track progress over time for test reports that have a subject identifier attached to them. Attaching a subject identifier can be done in one of two ways:

  • Using the mobile apps - when saving a test series, you can enter a Subject Identifier, or select a previously used identifier from the list
  • Using the ActivForce dashboard - open a test report, then select “Add Subject Details” (if no details have been added) or “Edit Subject Details” (if the test report already has some other details) and enter an Identifier.

Then, select the “Track Progress” option next to the search bar on the main “Test Reports” page. You will be presented with a page that prompts you to select a subject. You can also search for previously used subjects using the search bar.

Step 2

After selecting a subject by tapping “View”, the dashboard will show a list of all tests (Strength or ROM) that were marked with the selected identifier.

Step 3

Selecting a test with the “View” button will show a table with all results recorded with that test name, including the date, test type (Strength or ROM), side (Left or Right, if selected during the test), as well as the key-performance indicators for each test type (Peak Force and Time to Peak for Strength or Max Angle for ROM).

Additionally, a graph will be displayed to help visually compare the results between different dates. The average result will be used for each date.

Attaching a Pad to the Device

The locking mechanism is a circle with four wide gaps that securely hold attachments in place through a twist lock mechanism. To secure an attachment to the ActivForce 2 device:

Step 1

Align the attachment teeth with the locking mechanism gaps.

Step 2

Push the attachment teeth down into the gaps.

Step 3

Twist the attachment clockwise (towards the locked symbol) a full quarter turn.

Step 4

When locked, the attachment will remain in place.

Measuring Force

The ActivForce 2 device measures accurately when force is applied in a perpendicular direction to the large surface areas of the device or an attached pad. Application of the force should be in the center of the surface as much as possible. Direct all force into the device directly perpendicular through the device’s center point.

C007

  • Do not apply force in a non-perpendicular direction to the device.
  • Do not apply force at an angle or in a direction going across (parallel to) the device.
  • Do not apply force on or near to the blue band of the device.
  • Do not apply a force during the three-second calibration period before the application starts the force measurement.
  • Do not move or shake the device during the force measurement.

Measuring Range of Motion

The ActivForce 2 device can also measure angular displacement for range of motion testing. While the device is calibrating, make sure that the device is being held still in the starting position.

Step 1

Place the device and/or subject into the starting position for test measurement and press the "Start Test" button.

Step 2

After calibration, move the device from the starting position (Position 1) to the ending position (Position 2) through one plane of movement only (frontal, horizontal, or sagittal).

C008

  • Do not rotate the ActivForce 2 device in multiple axes during a measurement.
  • Do not move the ActivForce 2 device in multiple planes of motion during a measurement.
  • Do not rotate the device during the brief calibration period before the application starts the range of motion measurement.

App Security

Sign in and out of the app or use the security features on your mobile device to ensure data privacy. Your data within the app is encrypted and accessible only with your username and password.

C009

Do NOT share your username or password with others. Always comply with local regulations on data privacy.

The Hand & Leg Straps

The Hand Strap

When using the Hand Strap attachment, ensure the strap is securely fixed in position. The Hand Strap may be used to secure the device to the user for strength and range of motion tests.

The Leg Strap

When using the Leg Strap attachment, ensure the strap is securely fixed in position. Use the Leg Strap to attach the device to the subject’s larger body parts for range of motion tests.

Threading the Hand and Leg Strap

Thread the strap through both loops with the logo face up and the plate face down. Place the device so that the locking mechanism fits into the hole in the plate. Slide your hand between the device and the strap. Pull the non-logo side across your hand. Pull the logo side over and secure the velcro. Use with desired attachment.

The Different Pads

Arched pad

When using the Arched Pad attachment, ensure the attachment is securely attached in the locking mechanism. Use on hard or bony body parts for strength tests. The curve of the Arched Pad surface can be used to place the device against curved body parts.

Foam Insert, Silicone Cover and Arched Pad

Use of the Foam Insert and Silicone Cover is optional. For additional subject comfort, the Foam Insert can be attached to the Arched Pad by removing the adhesive backing and adhering it to the surface of the Arched Pad. The Silicone Cover can be secured in place using the grooves in the silicone to fit around the Arched Pad, providing a non-porous surface which can be easily cleaned and disinfected between uses. 
To ensure accurate measurement and prevent the slippage of the device or Silicon Cover during measurement, force should only be applied in a direction perpendicular to the Pad surface.

Rounded Pad

When using the Rounded Pad attachment, ensure it is securely attached in the locking mechanism. Use this pad for all grip strength measurements and when bracing a test position against an immovable object.

W008

To ensure accurate measurement and prevent the slippage of the device or Silicon Cover during measurement, force should only be applied in a direction perpendicular to the Pad surface.

The Immobilization Belt & Belt Loop Plate

When using the Belt Loop Plate immobilization belt attachments, keep the belt positioned perpendicular through the loops to reduce strain on the belt loops.

The Round Pad with the Belt Loop Plate is recommended when the device is being pressed into the inanimate object. The Belt Loop Plate may be used to guide the belt when the device is strapped to a fixed or immobile object.

The Belt Loop Plate

Incorrect Strap Positioning and Correct Strap Positioning (parallel to direction of applied force).

W009

The plate is designed to hold the belt in position during a test and it is not designed to withstand force from a test. No force should be applied on the loops for a more accurate measurement. Keep the straps parallel to the direction of applied force so the force is transmitted to the device.

W010

Ensure the belt is wrapped over the smooth side of the device and not over the attachment side of the device.

Cleaning and Disinfecting the Device

The ActivForce 2 device’s external surfaces, including the rounded pad and the soft, arched pad silicon sleeve, can be hand wiped at room temperature with a soft cloth and a cleaning solution consisting of 70% isopropyl alcohol and water. After application, the cleaning solution should be allowed to evaporate completely.

Alternatively, a cleaning solution of 1% hypochlorite and water (10,000 ppm) can also be used to wipe the device, pads and silicon sleeves. Antibacterial hand sanitizing agents such as non-alcohol wipes or alcohol-based hand gels may also be used.

W011

To prevent the spread of infection and diseases, the ActivForce 2 device and pads should be disinfected between each use.

C010

Any residue from these agents should be wiped away using a soft, dry clean tissue or towel.

Replacing the Battery

The ActivForce 2 device comes with a standard AAA battery, which lasts between six to twelve months, depending on usage and environmental conditions. To replace the battery, follow these steps:

Obtain a new AAA battery and a medium size flat-head screwdriver.

Hold the ActivForce 2 device and the screwdriver with the pad attachment mechanism facing upwards. The ActivForce logo should NOT be visible.

Insert the tip of the screwdriver in the small opening near the power button. The screwdriver should not be inserted more than 0.25 inches (6mm). Gently turn the screwdriver until a click sound is heard and the bottom shell lid pops slightly open. This opens the first of five latches on the bottom lid.

Gently slide the screwdriver clockwise along the edge of the ActivForce 2 device, keeping the tip inside the gap between the lid and the device until it is about an inch and a half away from the original opening near the power button.

 Stop sliding and gently turn the screwdriver until a CLICK sound is heard. Continue sliding the screwdriver around the edge with the tip inside the crevice, stopping every inch and a half to turn the screwdriver to pop open the latches of the bottom lid. The bottom lid can be removed when four to five of the latches are opened.

Once the lid is removed, you can replace the present AAA battery with a new one.

Once done replacing the battery, you can put the lid back in place.

W012

Ensure that no debris is present inside the device before reattaching the lid.

Troubleshooting

If the ActivForce 2 device does not connect with the mobile companion application, ensure that the application has Bluetooth permissions on the mobile device. For some devices, the ActivForce companion application also requires Location permissions. If connectivity problems continue to occur, follow the instructions to replace the battery or make sure your mobile device is supported.

The ActivForce mobile application performs a tare operation automatically before each measurement, during the calibration phase. In addition, the device can also be manually tared. To tare the device, select “Calibrate your device” from the profile menu of the ActivForce mobile companion application.

To perform a hard reset of the device, remove the battery and re-insert it after 10 seconds. The battery and the removable pads are the only user-serviceable items.

For further assistance, complaints or comments, please contact support@activbody.com.

Safety

The ActivForce 2 device is certified to be compliant with all required safety standards and regulations, including electromagnetic compatibility and hazardous materials, for all territories it is distributed in. This includes these standards: IEC 60601-1 (Safety) and EN 60601-1-2 (EMC).

C011

The ActivForce 2 device is not waterproof and should not be immersed in water or other liquids.

W013

Similar to many electronic devices, the ActivForce 2 device contains flammable materials and should not be exposed to flames or other excessive heat sources.

Service Life

The ActivForce 2 device has a service life of at least 30,000 cycles, or force measurements.

Disposal

The WEEE symbol indicates that the product should not be disposed of with other household waste. Batteries should be discarded separately, and the device should be deposited at an appropriate facility to enable recycling. Please separate these items from other types of waste and recycle them responsibly.

W014

Dispose of the device and accessories after cleaning and disinfection, according to local regulations.

Device Dimensions

Weight

(with AAA battery) 4.8 oz / 137 g

Length

3.7 in / 9.5 cm

Width

3.1 in / 7.8 cm

Height

1.3 in / 3.3 cm

Volume

(approximate) 8.5 in³ / 139 cm³

Device Functional Specifications

Force Measurement Range

0 to 200 lb / 0 to 90 kg

Force Measurement Accuracy

± (1.4 lb / 0.64 kg + 5% of the applied force)

Range of Motion

0 - 360º

Range of Motion Accuracy

±1° for angles measured from 0° to 33°, ±3% of the measured angle when > 33

Companion App OS Requirements

Android 10 or higher, iOS 17 or higher

Connectivity

Bluetooth 4.1

Operating Distance

Up to 7 ft / 2 m from mobile device

Battery

1 AAA battery

Battery Life

Approximately 6 months, may vary with usage or environmental factors

Operating Temperature

Range 32° to 95° F / 0° to 35° C

Storage Temperature Range

-13° to 122° F / -25° to 50° C

Operating Humidity Range

15% to 93% relative humidity

Case Dimensions

Weight

29.5 oz / 835 g

Length

14.2 in / 36.0 cm

Width

6 in / 15.2 cm

Height

3.94 in / 10.0 cm

Volume

(approximate) 334 in³ / 5,472 cm³

Accessories Dimensions

Hand Strap Length

13.5 in / 34.3 cm

Hand Strap Width

1.5 in / 3.8 cm

Leg Strap Length

31.5 in / 80.0 cm

Leg Strap Width

1.5 in / 3.8 cm

Belt Length

97.6 in / 247.9 cm

Belt Width

1.5 in / 3.81 cm

Electromagnetic Emissions

Emissions Test

Compliance

Electromagnetic Environment - Guidance

RF Emissions

CISPR 11

Group 1

The Activforce 2 uses RF energy only for its internal function. Therefore, its RF emissions are very low and are not likely to cause any interference in nearby electronic equipment.

RF Emissions

CISPR 11

Class B

The Activforce 2 is suitable for use in all establishments, including domestic establishments and those directly connected to the public low-voltage power supply network that supplies buildings used for domestic purposes.

N011

The following immunity tests are not applicable and were not performed because the device is internally powered (battery-operated) and has no external cables: Electrical Fast Transient/Burst, Surge, Conducted RF, Voltage Dips/Interruptions, and Electrical Transient Conduction (ISO 7637-2).

Electromagnetic Immunity

Immunity Test

IEC 60601-1-2 Test Level

Compliance Level

Electrostatic Discharge (ESD)

± 8 kV contact

± 8 kV contact

EN-IEC 61000-4-2(2008)

± 2 kV, ± 4 kV, ± 8 kV, ± 15 kV air

± 15 kV air

Radiated RFEM Fields

10 V/m

10 V/m

EN-IEC 61000-4-3(2006)+A1(2008)+A2(2010)

80 MHz - 2.7 GHz

10 V/m

Symbols Glossary

Symbol

Description

Reference

ActivBody Logo

ActivForce Logo

Bluetooth Logo

Date of Manufacture

ISO 7000-2497

Legal Manufacturer

ISO 7000-3082

Consult Instructions for use (eIFU)

ISO 7000-1641

Consult Instructions for use (IFU)

ISO 7010:M002

Type BF Applied Part

IEC 60417-5333

DC Current

IEC 60417-5031

Humidity Limitation

ISO 7000-2620

Temperature Limits

ISO 7000-0632

MR Unsafe

ASTM F2503

Keep Dry

ISO 7000-0626

WEEE Symbol

Medical Device

ISO 15223-1:2021 Ref. No. 5.7.7

Model Number

ISO 7000-2493

Catalogue Number

ISO 7000-2493

Serial Number

ISO 7000-2498

Unique Device Identifier

ISO 15223-1 Ref. No. 5.7.10

Disclaimer

This information is provided for general informational purposes only and is not intended as, nor should it be considered a substitute for, professional medical advice. Do not use the information on this website for diagnosing or treating any medical or health condition. If you have or suspect you have a medical problem, promptly contact your professional healthcare provider. The information on this document is provided “as is” without any representations or warranties, express or implied.

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