Why is my GastroCH4ECK showing a warning sign and a gas cylinder connected to a GastroCH4ECK?

Calibration is Due On GastroCH4ECK

Your device will need calibrating every month, do so by following the calibration procedure in the user manual.

 If the problem persists or has not been resolved by the information provided above, please contact your local distributor for more information. Find out who your local distributor is from our website here.