Small size, wireless controlSmall size, stable and reliable performance, high reception sensitivity, through wireless signals to control the equipment you want to control, bring more convenience to your life. 220V,Wide ApplicationWhich is mainly used to control household electronic equipment, such as remote control water pump switch, garage door, curtain, tubular motor, lamp, various small household appliances, etc. The 2-channel design can control the on and off of 2 products, It can also control the forward and reverse rotation of one motor. 2 Remote Controls3 working modes can be switched (Momentary/ Toggle/ Latched). Supports 433MHz frequency. The learning code has high level security for its low repeat rate and relearn mode, by which it can delete the old code and relearn a new code when a remote is lost, so that you keep some always in control. Simple operation Simple installation, learning and control. Two independent relay channels can work together for polarity reversal or individually (Momentary/Latched) to control different electronics. IC storage capacity on the receiver is limited. Only 15 remotes can be stored. Package Included and Quality AssuranceComes with 2pcs 2button transmitter and 1pc 220v 2CH receiver. Note: If you encounter any problems during use, please dont worry, please send an email to us, we will be responsible for the products we sell, thank you Working method: 1. Momentary: press the button on the remote control to connect the receiver relay; release the button to disconnect the relay from the receiver. 2. Toggle: Press and release the remote control button to connect the relay; press the button again to disconnect the relay from the receiver. 3. Latched: Press button A on the remote control to control relay A, and relay B will stop working. Press button B on the remote control to control relay B, and relay A will stop working. work. Press any button except A and B button or press and hold A + B at the same time, all relays will stop working. 4 . Deleting data of existing remotes: By pressing the learning key button on the receiver board 8 times, the LED indicator flashes 8 times, the existing remotes are deleted successfully. Recipient: Working frequency: 433.92 Mhz RF working mode: superheterodyne Receiver sensitivity: -110dBM Receiving sensitivity: 97 dbm Decoding mode: MCU software decoding Can store remote control: 15 Matching mode:: learning code Working Temperature: -10~+70 Transmitter: RF Frequency: 433.92MHz. IC Type: Code d learning Button: 2 buttons