The Activforce 2 is handheld dynamometer and inclinometer that provides accurate force and angle measurement along with an easy-to-use companion application that tracks and records patient progress. The comprehensive Activforce 2 platform provides real-time strength and range of motion measurements and tracks patient progress along the rehabilitation continuum.

The Activforce 2 package includes the following components

  • Activforce 2 dynamometer

  • Rounded pad

  • Arched pad

  • Hand and leg straps

  • Mobilization belt

  • Belt loop plate

  • Custom carrying case

The rounded pad is the default accessory for measuring strength and range of motion on most body parts, while the arched pad is used to test angular body parts such as the elbow. The mobilization belt aids in pull measurements by helping therapists apply traction to the spine or the joints to stabilize movement during certain protocols. Hand and leg straps are provided to securely hold the Activforce 2 dynamometer in place during measurement.

Attaching a Pad to Your Activforce 2 Dynamometer


Turning Your Activforce 2 Dynamometer On/Off

BLUE light means Activforce 2 is available for a 
Bluetooth connection with a compatible app.
GREEN light means Activforce 2 is connected to an app.
RED flashes can indicate two separate states. Periodic red flashes indicate that the battery is low and needs replacement, while a single red flash 
acknowledges that the device has been successfully turned off.

Attaching and Using Hand Straps on You Activforce 2 Dynamometer


Replacing the Battery on Your Activforce 2 Dynamometer

Activforce 2 comes with a standard AAA battery, which lasts between 6 and 12 months.
To replace the battery, follow these simple steps:
You need a new AAA battery & a flat-head screwdriver.
Hold Activforce 2 and the screwdriver like this.
The Activforce star logo should NOT be visible.
Insert the tip of the screwdriver in the opening and softly turn until you here a CLICK sound. The lid pops slightly opened.
Gently slide the screwdriver along the edge of Activforce2, keeping the tip inside the crevice, until you get to the spot as shown in the picture. Then stop and slightly turn until you hear a CLICK. The lid is now open and you can carefully remove it.

Activforce 2 Summary Reports

The Activforce 2 platform generates comprehensive summary reports that can automatically be emailed to the account holder for inclusion in patient records.

Activforce 2 Specifications

Physical Dimensions – Activforce 2 Device

  • Weight: 137 gram / 4.8 oz (with battery)

  • Length: 95 mm / 3.7 in

  • Width: 78 mm / 3.1 in

  • Height: 33 mm / 1.3 in

  • Volume: 139 cm³ / 8.5 in³ (approx.)

Physical – Package (case)

  • Weight: 635 gram /22.4 ounces

  • Length: 360 mm / 14.2 in

  • Width: 152 mm /6 in

  • Height: 100 mm /3.94 in

  • Volume: 5,472 cm³ /333.92 in³ (approx.)


Hand Strap

  • Length: 34.29 cm /13.5 inch

  • Width: 3.81 cm /1.5 inch

Leg Strap

  • Length: 80.01 cm/31.5 inch

  • Width: 3.81 cm /1.5 inch


  • Length: 247.9 cm /97.6 inch

  • Width: 3.81 cm /1.5 inch


  • Force Range: 90 kg / 200 lb

  • Force Accuracy: within ± (1.4 lb + 5% of the applied force)

  • Range of Motion Accuracy : The greater of ±3%  or  ±1 degree.

    • Note: 1 degree covers cases of small angles where the 3% calculation results in accuracy less than 1 degree. In such case 1 degree will be greater and will be selected as required accuracy.

  • System Requirements: 

    • Android 8 and newer 

    • iOS 11.4 and newer

  • Connectivity: Bluetooth® 4.1 (Frequency Range: 2402 – 2480 MHz)​

  • Operating distance: up to 2 m / 7 ft (from the Activforce 2  App host device)


  • Battery type: 1x AAA battery (replaceable), 1.5 V

  • Battery life: 6 months (may vary with usage and/or environmental conditions)


  • Operational Temperature: 0 to 35 °C / 32 to 95 °F

  • Storage Temperature: -25 to 50 °C / -13 to 122 °F

  • Humidity: 15% – 93% RH

  • Pressure: 700 to 1060 hPa (IEC 60601-1-11 clause 4.2.2.)



Activforce 2 is designed for measuring compressive forces up to 90 kg  /  200  lbs.,  by  applying  pressure  to  Activforce 2’s  exterior  surfaces,  when  placed  between  two  body  parts,  such  as  your  palms,  or  a  body  part  and  object,  such as your palm and a desktop. Pressing on or near the belt will result  in  an  inaccurate  force  measurement and may cause physical injury. Make sure to  follow  the  instructions  and  guidelines,  as  provided in the exercising apps, games and/or guides.


Activforce 2 is certified  compliant  with  all  required  safety  standards  and  regulations,  including  electro-magnetic  compatibility  and  hazardous  materials,  for  all  territories  Activforce 2 is distributed in.


Activforce 2 is not waterproof and should not be immersed in or   sprayed   with   water   or   other   liquids.   Like many consumer electronic  devices,  Activforce 2  is  flammable  and  should be kept from exposure to flame or other excessive heat sources. Activforce 2’s performance can be also affected by extreme temperature or humidity.


You can clean your Activforce 2 by hand-wiping with a damp soft cloth. For more thorough cleaning, saturate the cloth with a mild detergent or 70% water solution of isopropyl alcohol.


Your Activforce 2 undergoes a normal reset cycle  each  time  you turn it on and on. In rare troubleshooting situations, a  hard  reset  may  be  required.  To do this,  simply  take  the  battery  out  of  its  compartment and insert it back in, following the battery replacement instructions in this User Manual.

Service and Troubleshooting

In   addition   to   Battery   Replacement   and   Reset (as   described  in  this  User  Manual),  Activforce 2  is  only  designed  for service by authorized personnel. For further information, please contact support@activbody.com.



In the European  Union,  this  symbol  indicates  that  this  product  should  not  be  disposed  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,  following  your   local   government’s   disposal   guidelines   and/or   electronic  parts  return  system. 


To get started using your Activforce 2 today, download the Activforce 2 app from the Apple App Store or Google Play store. Follow the instructions in the app to register for an account and pair your device using Bluetooth. Visit our tutorial section (Tutorial) for instructional videos and sample protocols and check out our Frequently Asked Questions (FAQ) for more information.