This 6-channel remote control kit can send and receive data. Transmitter board: the working power supply voltage is DC2.8V-3.3V, using two 1.5V ordinary AA batteries to supply power; the pin of the XH2.54MM power plug is connected to the positive pole on the left and the negative pole on the right. Receiving board: working power supply voltage DC3.6-6V, please look for the positive and negative poles of the power supply, the red wire is connected to the positive pole, and the black wire is connected to the negative pole. The maximum load current of each channel of the receiving board is 1.2A, and the continuous load current is 1A. The output can only be connected to a 2-core brushed motor. The remote control is electric . Each output of the output board can only control the forward and reverse rotation of the motor, and cannot adjust the speed. Specification: Material: Plastic + Electronic Components Size Chart: Transmitter: 7.9x5.4cm/3.11x2.13inch Receiver Board: 4.5x4cm/1.77x1.57inch Package Includes: 1 Piece Transmitter 1 Piece Receiver Board 1 Piece Battery Box Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!