Traxxas telemetry changes the game by allowing you to monitor and record real-time data from your vehicle while you drive. Add the GPS module to the water-sealed Telemetry Expander and track the actual speed of your vehicle in real-time! The Telemetry Expander accepts up to six auto-detectable sensors in addition to the three standard Traxxas sensors. There are currently three auto-detectable sensors to select from: voltage, temperature, and GPS. The Traxxas Link application automatically recognizes sensors, so setup takes only a few moments! Advanced communication bus technology allows you to connect the telemetry expander to your TSM receiver or to your High-Voltage Power Amplifier, or directly to the VXL-6s and VXL-8s electronic speed controls with optional data cables. Install the Telemetry Expander, choose your sensors, and prepare for an all-new RC driving experience!