FULL COMPATIBILITY: 637360 Temperature Monitoring Controller, Compatible with RV Refrigerator 2118 Series. Replaces 634677 Temperature Monitoring Controller, Some Additional Wiring Required Compatible with RV Refrigerator 1200, 1201, 1210 and 1211 Series. When ordering parts, please verify that your part number is the correct one for your model before ordering. Upgraded Design: Rainy, weather and power outages are unavoidable outdoors, and the sensor will fail if it gets wet. We added a plastic cover to keep it waterproof. These covers help prevent moisture damage, ultimately increasing the life of the product and ensuring long-term reliability. Ideal Replacement: This 637360 Temperature Monitor Control Kit includes Temperature Monitoring Control/Thermocouple/Ground Wire/Limit Input Wire/Limit Output Wire. Complete your RV refrigerator tool with this temperature control kit. It is perfect for monitoring faulty operation. Once a heat anomaly is detected, it disables all heat source outputs. Safety: The purpose of this kit is to monitor the temperature of the boiler in your RV refrigerator, protecting your RV refrigerator from potential fire. It monitors boiler temperature and automatically shuts off the fridge if it gets too hot, providing reliable performance and peace of mind. Enhanced Durability: We know relays can fail due to a variety of factors, such as moisture from wind, rain, or power outages. That's why our replacement parts come with plastic protective covers. These covers help prevent moisture damage, ultimately increasing the life of your product and ensuring long-term reliability. Due to different batches, the product appearance may be slightly different, which will not affect the use Colour:Photo Color Material:Plastic Package Contents: 1x Temperature Monitor Control Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.