Learning: Press learning button, the indicator flashes and OFF, loosen finger, press any button of the remote transmitter, indicator flashes three times, meaning learning succeeds.(how many times press the learning button according to the working way you need)Clearning: Hold press learning button about 8 seconds,indicator light flashes several times and off, then press remote ,Relay did not Respond, it means clearning code successful.About Receiver:Model No.: AK-C2110081. Working voltage: DC12V-36V2. Quiescent condition: Less than 6mA3. Working temperature: -40 - + 804. Receiver sensitivity: more than -105dBm5. Working frequency: 433mhz6. Max load current: 10AAbout Working way:Working way changed by Learning buttonMomentary: Press the Learning Button 1 times.Relay: Press and hold On; Release Off.Toggle: Press the Learning Button 2 times.Relay: Press On; Press same button again Off.Latched: Press the Learning Button 3 times.Relay: Press On; Press other button Off.2 channel Momentary + 2 channel Latched: Press the Learning Button 4 times.2 channel Momentary + 2 channel Toggle: Press the Learning Button 5 times.2 channel Toggle + 2 channel Latched: Press the Learning Button 6 times.About Transmitter:1. Buttons: 4 Buttons2. Working Voltage:DC6V3. Operating frequency :433MHz4. Remote Distance: 50-100M5. Operating Current: 12 mAh6. Encode: EV1527 codeRemote Quantity:2PCSColour:White & BlackMaterial:Plastic+MetalPackage Contents:1 * Remote Control Switch Receiver2 * Remote Control Switch TransmitterOnly 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.