Product Information: The 636658 thermistor assembly is compatible with Norcold RV refrigerators and is used to detect temperature changes inside the refrigerator to ensure that the refrigerator is operating within the set temperature range. This function helps to maintain a stable temperature inside the refrigerator, thereby extending the shelf life of food. With your purchase, you will receive two new 636658 thermistors with four connectors. Compatibility: The 636658 thermistor assembly is compatible with Norcold RV refrigerators and is suitable for but not limited to the following models: N300, N400, N41X, N51X, N61X, N62X, N64X, N81X, N82X, N84X, 1200(Serial #849677 and Above), 1201(Serial #849677 and Above), 1210(all models), 1211(all models) and N1095(all models). For replacement of part numbers: 636658 and 620871. High Quality: The 636658 thermistor assembly is made of high-quality semiconductor materials, with high sensitivity and good temperature response characteristics, which can quickly detect temperature changes and convert them into resistance changes, thereby achieving the best temperature control function. The outer shell part of the resistor is made of waterproof material, which will not affect the performance of the resistor even in cold and humid environments, thereby maintaining the normal operation of the refrigerator. Easy to install: The 636658 thermistor has a 4-pin connector that can be inserted into the lamp holder, and the other end should be stuck on the second heat sink on the right. This design makes the installation of the resistor assembly very convenient, and the replacement of parts can be completed without the help of complicated tools, which greatly saves your time and money. Tips: Before replacing the resistor, please turn off the power and wear work gloves to ensure your personal safety. After-sales service: Please check your RV refrigerator model carefully before purchasing to avoid unusable. If you have any questions about this 636658 thermistor, please contact us in time and we will reply you as soon as possible within 24 hours.