Replacing OEM numbers:629409, which is a direct replacement for the old or broken one. Compatible with Norcold 2118 Series Refrigerators, applicable but not limited to the following models: N611, N621, N641, N811, N821 and N841. The length is 18.2cm, with the black end measuring 3x1.2cm and the white end measuring 2.9x1.1cm. The 629409 RV Refrigerator Thermistor Sensor is made of high-quality thermistors and semiconductor materials. It has high sensitivity and can quickly and accurately detect the temperature inside the refrigerator, so as to make adjustments and protect the performance of the refrigerator. In addition, the outer shell of this resistor is made of waterproof material, which will not affect the use of the sensor even in cold and humid environments, and has a long service life. Easy installation, can be replaced directly without adjustment, great compatibility and high reliability., Manufacturer: ECSiNG