Description: Receiver Transmitter Board: 27MHZ 4CH RC Remote Control Circuit PCB Receiver &Transmitter Board with Antenna for DIY RC Car Truck Accessories The maximum output voltage of the receiving board: 4 lines, 2 pairs and 1 group, output two voltages, the size is about 2-3.5V, respectively control the forward and reverse rotation of one motor, and the motor with 3V voltage can be used. Features: The two output voltages may have different sizes, which may be obvious when the battery power is insufficient. Therefore, it is recommended to use the small voltage separately for the steering motor; the remote control distance, in the case of sufficient power, no Interference, about 10 meters after connecting the antenna correctly Wiring method: transmitter board: red wire V+ is connected to the positive pole of the power supply, black wire V- is connected to the negative pole of the power supply, and ANT is connected to the antenna; receiving board: the black wire is connected to the negative pole of the power supply, and the red wire is connected to the positive pole of the power supply; a yellow wire with a green wire is connected to a motor ( Two long wires are connected to motor 1, and two short wires are connected to motor 2) Working Voltage: Receiver 4.5-6V, Transmitter 4.5V Specification: Material: Electronic Component Size Chart: Receiver Board /1.02x1.69inch Transmitter Board 3.5x7cm/1.38x2.76inch Package Includes: 1x Receiver Board 1x Transmitter Board(4 Pack) 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 online shopping!