On screen symbols
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      Calibration Reminder For ToxCO

      Why does my ToxCO have a gas cylinder connected to a ToxCO symbol on the screen?

      ToxCO-calibrationThis indicates that the device needs calibrating, you can find instruction of how to calibrate the device in the manual. This could also show if the device has been reset, the device will still need calibrating.

      If the problem persists or has not been resolved by the information provided above, please contact Bedfont or your local distributor for more advice.