Cautions:When the new device can't be remote controlled, Please check to see whether the bar codes in emitter and receiver are , whether the indicator light on the emitter is working, whether the cable of receiver is connected properly and whether the buzzer beeps once when is on.When the receiver can't be controller by emitter, please checking to see whether the battery contact normally and whether the is enough, Please replace battery in time when it is out of . 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 before remote controlling. The receiver beeps when you click the remote. It might bother some people. Please make there are enough space in the canopy of the fan or the receiver has to be fit beside.Operating Voltage: AC 90-220VWorking Frequency: 50-60HzRemote Control Distance: More than 20 metersSupport Encoding: 1527 learning codeOperating Mode:1527 remote controlLoading :Ceiling Fan: Max.300WIncandescent Lamp: Max.1000WLED or Energy saving lamp: Max. 200WLED light or energy saving lamp: Max 200WPlease don't over loading Remote control battery: 2 AAA battery needed (Not Include)Type: 220VColour: white and blackMaterial: plasticPackage Contents:1 x Controller1 x Remote control1 x Wall Only 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.