To assist in determining whether your CO2 Gas Sensor is the current model or an earlier one, the image below will help.


The newer model was introduced in January of 2007 and the other was retired at that time. Both of these sensors use the white BTA connector and auto-identify when connected to a functional interface. An even earlier version of the older style used a 5-pin DIN connector, and did not include the auto-ID feature. The DIN model has not been sold since the late ’90’s.