The Traxxas Temperature & Voltage sensor is part of the Traxxas telemetry system. Please note that the sensor mount is NOT included with the sensor, it is sold separately (Which is absolutely ridiculous) so be prepared to dish out another 3 bucks for it. You will also need the Traxxas Link wireless module (if not already included in your transmitter) and a Bluetooth capable iPhone or Android device with the Traxxas Link application installed to complete the sensing system. Its pretty simple to install, just plug it into the receiver and it’s good to go! Hope this review helped!