12J NTC Thermistor Temperature Sensors from Therm-O-Disc® offers excellent reliability in a compact, rugged, cost-effective design. The 12J is also a proven performer for moisture protection and freeze-thaw cycling. Lead wires can be set to any length and color to match your requirements. The plastic shell can be made from PP, PBT, PPS, or most any plastic that you need for your application. The internal thermistor element can be selected to meet any resistance-temperature curve and tolerance. The 12J is used in a wide range of applications including air conditioners, refrigeration systems, heat pumps, and industrial processing systems.