FAQ Banner, full mask with FitCheck in mask device.


Frequently asked questions

Just like with a mobile phone, the charge time depends on the battery charge level when you start charging the device. If the battery is almost full when charging starts, it may only take a few minutes to top off. If the battery is completely flat, it will take less than 2 hours to fully charge.

The FitCheck has a typical battery life of 8+ hours per charge. This will allow for many seal checks to be performed. If you are using the FitCheck regularly, We would recommend that you charge it at least once each week.

    Flashing Green = Powering up
    Solid Blue = Bluetooth has been paired
    Blinking Purple = Ready to test
    Flashing Purple = Over breath
    Solid Purple = Test in Progress
    Blinking Red = Fail
    Solid Green = Pass
    Rapid Flashing Purple (During Test) = Over-breath

  • Computer: When connected to your PC, the software will download all the new tests since the last download.
  • Smart Phone: When connecting to your smart phone, the phone will download only the previous 16 tests

No. The FitCheck makes sure that the mask has a good seal to your face at the time of the donning. This method is for safety in the moment and does not fulfil the annual fit testing requirements.

Look at the front of the FitCheck and you will see a serial number. On the computer, select the device with the matching serial number.

(Applies only to the FitCheck Bluetooth model QCK 1000-02)

  • Computer: When pairing to a computer, you will need to pair using the Bluetooth connection setting on the computer before opening the FitCheck Application to then connect the device to the app.
  • Smart Phone: On your smart phone the application will connect much like any typical Bluetooth device.

Pressing on the FitCheck closes the air flow so that it’s airtight. The test doesn’t start until a negative pressure is drawn and held in the respirator after the FitCheck is pressed closed.

The battery maybe damaged or expired and you’ll need to replace it.

Re-charge battery using the supplied cable and a USB charger

The flashing red light would indicate a sensor failure. Re-start device or replace device if error continues.

You will need to re-start device

  • Check that Windows Bluetooth connection and Location services are active on your mobile phone and re-start your FitCheck device
  • Something else might be paired to the device like your computer or phone


  • OS Version: 7 or higher
  • OS Type: 64 bit
  • Hardware: Bluetooth 4.0 or higher
  • OS Version: 10.12 Sierra or higher
  • OS Type: 64 bit
  • Hardware: Bluetooth 4.0 or higher


  • iPhone, or iPad
  • OS Version: iOS 10 or higher
  • OS Type: 64 bit
  • Hardware: Bluetooth 4.0 or higher


  • OS Version: 6 or higher
  • OS Type: 64 bit
  • Hardware: Bluetooth 4.0 or higher

Windows Bluetooth drivers can be downloaded from https://www.intel.com/content/www/us/en/support/articles/000005489/network-and-i-o/wireless-networking.html

USB VPC drivers can be downloaded from https://www.ftdichip.com/Drivers/VCP.htm

  • Wait for LED indicator to flash purple signaling for a retest of the fit check.
  • With multiple failures check the mask for integrity issues, seal issues and confirm FitCheck is properly attached to the mask

You will need to re-start your device off mask in ambient air