Wireless Smart Switch Light RF 433Mhz Wall Panel Switch With Remote Control Mini Relay Receiver 220V Led Light Lamp Fan Dropshi Description: Working voltage : AC 90V~250V Quiescent Current : 108 dbm Amount of storage remote controls : 25 pieces Support encoding : 1527 Leaning code,2262 fixed code RF Operating mode : ASK superheterodyne wireless reception Receiving range : Open space is more than 50 meters,Indoor partition wall 15 meters Wall switch size: 86 standard size Switch battery : 1 pcs CR2032 coin cell battery (not include) Specifications: Easy to install RF Output of Good Stability Easy pairing 1Open the battery compartment as indicated by arrow and install the coincell battery corectly. 2Connect the receiver input to the power supply, then press the receiver's learning button 2 times continuously. 3Press 1 times the remote panel switch key you want to pair. 4When the red indicator light of the receiver flashes and then turns off, the pairing is successful. Reset Press the learning button (on the Receiver) 8 times. The existing data will be deleted succeed. Package Included: 1*KR2201G-4 433Mhz Receiver Module