This is a replacement Traxxas Temperature Telemetry Sensor, and is intended for use with the Traxxas Spartan. This package includes the sensor, housing, and thermal pad. Temperature data is critical to monitoring performance, gauging the effects of changes, and preventing overheating. The Temperature Sensor features a precision thermistor and is installed on the motor or engine to continually monitor temperature as you drive. The Temperature Sensor can also be fitted to a speed control, battery, or exhaust pipe to monitor its temperature.