Cautions: When the device can't be remote controlled, Please check to see whether the bar codes in emitter and receiver are consistent, whether the indicator light on the emitter is working, whether the cable of receiver is connected properly and whether the buzzer beeps once when Power is on. When the receiver can't be controller by emitter, please checking to see whether the battery contact normally and whether the Power is enough, Please replace battery in time when it is out of power. Insensitive remote controlling probably because of interfering environment and the low battery. Please remove battery when it isn't in used for a long time. Please wiring properly in strict accordance with parameters on labels. Otherwise it will directly shorten life of this device or cause malfunction immediately. The antenna mustn't connect with other wires. When these is a code switch on fan, please turn the fan to the highest gear before remote controlling. The receiver beeps when you click the remote. It might bother some people. Please make sure there are enough space in the canopy of the fan or the receiver has to be fit beside. Operating Voltage: AC 90-220V Working Frequency: 50-60Hz Remote Control Distance: More than 20 meters Support Encoding: 1527 learning code Operating Mode:1527 remote control Loading Power: Ceiling Fan: Max.300W Incandescent Lamp: Max.1000W LED /Energy saving lamp: Max. 200W LED light / energy saving lamp: Max 200W Please don't over loading! Remote control battery: 2 AAA battery needed (Not Include) Type: 110V Colour: white + black Material: plastic Package Contents: 4 x Controller 4 x Remote control 4 x Wall seat Only the above package content, other products are not included. Note: Light reflection 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.