The item is a professional and practical 320A brushed motor controller ESC, which is capable of supplying up to 320 Amps (forward) or 160Amps (backward) of continuous motor current when connected with motor. Its integrated Battery Circuit (BEC) powers the receiver from the motor battery, with automatic cutoff of the motor power to preserve receiver power as the battery becomes depleted. It is small and powerful, which can be used for different type of RC ship or car. Features - - Shell material: durable hard plastic. - Size: 43 x 27 mm. - and 7.4-11.1V 320A Brushed Motor Controller ESC. - Applicable for RC ship, cars, boats, truck, etc. - Automatically the center position. - High-frequency drive system. - Low-resistance tube. - Battery support: - , : 4 - 6 groups ( 4.8V ~ 7.2V); Lithium battery: 3 groups (7.4V - 11.1V). - Current parameters: forward 320A, reverse 160A, brake 270A. - BEC output: Voltage: 5.6V, Current: 2A ( supply electricity for receivers, servos ) Instructions 1. Connect to the power battery correctly, the red wires at both ends of this wiring boards are positive, are negative. ( or connect to a standard DC battery plug male plug /T plug /banana plug). 2. The output red and of ESC need to be connected to the red and of car 540 motor 3. Open the ESC power , then the motor produces a " " sound, and then turn on the transmitter power, the motor will produce a " - - mi" sound which proves that the and ESC have been successfully connected. Package list: 1 * 7.4-11.1V 320A Brushed Motor Controller ESC for RC Truck Boat (Black)