This is the Traxxas XL-5 Waterproof Forward/Reverse low loss wire Thermal shutdown protection Multi-color LED Training Mode limits throttle output to 50% for new drivers Programmable with three drive profiles High capacity heat sink INCLUDES: Traxxas XL-5 Forward and Reverse Electronic Speed Control with connectors and instruction manual REQUIRES: Connecting to motor and battery of vehicle Thermal Protection: Thermal Shutdown Single Button Setup: Yes Motor Limit: 15T (540 Size), 12T (550 Size) Input Voltage: 4-8 Cells (4.8 to 9.6V DC) Weight: 3.07oz (87g) Profile Selection: Sport Mode 100% FWD, 100% Brakes, 100%REV Race Mode 100% FWD, 100% Brakes, No REV Training Mode 50% FWD, 100% Brakes, 50% REV