Learning: Press learning button, the indicator flashes and OFF, loosen finger, press any button of the remote mitter, 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-C211008 1. Working voltage: DC12V-36V 2. Quiescent condition: Less than 6mA 3. Working temperature: -40℃ - and 80℃ 4. Receiver sensitivity: more than -105dBm 5. Working frequency: 433mhz 6. Max load current: 10A About Working way: Working way changed by Learning button Momentary: 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 and 2 channel Latched: Press the Learning Button 4 times. 2 channel Momentary and 2 channel Toggle: Press the Learning Button 5 times. 2 channel Toggle and 2 channel Latched: Press the Learning Button 6 times. About mitter: 1. Buttons: 4 Buttons 2. Working Voltage:DC6V 3. Operating frequency :433MHz 4. Remote Distance: 50-100M 5. Operating Current: 12 mAh 6. Encode: EV1527 code Remote Quantity:2PCS/1PCS Colour:White and Black Material:PlasticandMetal Package Contents: 1 x Remote Control Switch Receiver 2 x Remote Control Switch mitter / 1 x Remote Control Switch Receiver 1 x Remote Control Switch mitter 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.