1Applicable Model: Temp monitor control kit is replacement for Norcold 2118 and 1210 Series, please confirm whether your model is applicable before buying. 2OE Number: The part number of temperature monitor for reference is 637360, please confirm whether it is consistent with the OE you need. 3Function: This temp monitor control kit detects improper operation of the cooling unit by monitoring the boiler surface temperature. 4Ensure Safety: Protect your Rv refrigerator from potential fires by detecting boiler temperatures, providing reliable performance and peace of mind with a long service life. 5Easy Installation: Quickly restores the safety and functionality of your refrigerator with simple plug and pull operation and direct replacement of old controllers.