How to the transmitter to the receiver? 1).Check and make all the wires are mounted,and the remote is CLOSED,insert the plug into CH3() on the receiver;2).Switch on the ESC,you can see the receiver red light flash;3).Press and hold on the button on the remote and then turn the remote on;4).You should notice the transimitter go from flashing red to solid red,and also the solid red of the receiver;5).Once you see a solid red light, you now know the two are binded together,and please pull the plug out (this is important,so the remote can record the throttle mid to realize the fail safe)6).Then you can test it again by turning off the controller and it should flashif you turn the on Transmitter back on it should go back to solid redBefore running,it's better to test the fail safe fuction by closing the remote,if the motor didn't move,so the fail safe fuction is in good condition,when you find the motor is moving,you have to repeat the step No1- No6 aboveBoard Category: Flat-PlateApplicable People: MenType: Electric SkateboardFrequency: 24GhzBattery: 37v 500mAh Li-po BatteryChannel: 2 channelincrease the throttle range about 15%;add an extra antenna inside to strengthen the signal.Better quality lithium battery.Mini Remote Controller 24GhzWeight: 48gFrequency: 24GChannel: 2 channels (throttle and LED light)Application of ESC: All ESC:Li-po 37v 500mAh(included)Suitable for : Electric skateboard longbaordUSB Charge spot (USB line do not inclueded,as it is suitable for normal USB line)colour:blackMaterial:plasticsize:100x52x20mmPackage Contents:1 * remote control1 * receiver1 * USB charging cableOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.