Model :- 27M GS-186RB + GS-170TX2A 4 Channel RC Remote Control Accessory 27MHz Circuit PCB Transmitter And Receiver Board Radio System For Car Truck Toy This is a 4CH RC Remote Control Circuit PCB Transmitter and Receiver Board. It has RC transmitter and receiver which has an Electronic frequency: 27MHz/40Mhz. The remote control distance of the RC transmitter…