Feichao 4CH 27MHZ Remote Transmitter & Receiver Board with Antenna for DIY RC Car Robot

4CH 27MHZ Remote Transmitter & Receiver Board with Antenna for DIY RC Car Robot Item included: 1x 27mhz Transmitter Board 1x 27mhz Receiver Board 2x Antenna Note, The item not include screws, please ready your self.  【Dimensions】: TX Board 3.5 * 7 cm, RX Board 2.6 * 4.3 cm;  【Electronic frequency 】: 27MHZ  【Working voltage】: 4.5V for transmitter board, 4.5v-6v for Receiving board ;  【Output voltage】: Output two way voltage about 2v-3.5v, can control 2x motors positive and negative, 1-3V motor can be used.  【product features】:  (1) the output of the two way voltage may be with difference, when the battery in short power, it may be more obvious. So that it is recommended to take a small voltage alone to do with the steering motor;  (2) The remote control distance, in the case of adequate electricity, no interference, after the correct accessing to the antenna , about 10 meters, the above is for reference only  (3) To improve the sensitivity of the remote control, please give the motor with fire-fighting capacitor  【Wiring】:  (1) Transmitter board: red line V + wire the power supply positive, black line V - wire the power supply negative, ANT wire antenna;  (2) Receiver board: black line connected to the power supply negative, red line connected to the power supply positive; R and L wire a motor, B and F line wire a motor. B and F line output voltage are larger.