Bundled discount: eWeLink module, the more you buy, the more discount you can contact the owner or leave a message product description Easy to setup,4CH Pro WIFI Wireless Relay Smart Switch with RF Function,working power DC 5V or AC/DC 7-32,support 2.4G wifi only,when pairing,please make sure to put the relay close to your router,Once its powered on,if the indicator light flash 2 short 1 long,no need to long press pairing button,tap to pair in ewelink app directly. 3 working mode,momentary latching and interlock,set work mode as channel in ewelink app,you can set 2ch with inching for add wifi control togarage door opener,another 2ch self-locking to automate lights WIFI and RF Remote Control,with 433mhz receiver bulit in(433Mhz RF doesnt include)support learning code 433Mhz RF only.4 button on the board,press each button to pair/remove RF as channel,independently control 4 appliance,real state feedback in your ewelink app Timing and Sharing. Smart Scene: Trigger on/off by temperature, humidity or other environmental conditions,It supports 8 group timing function and Share Control with Family Voice Control,works with Alexa Google Home Nest IFTTT, Link "eWeLink Smart Home Fan" capability. You can request Amazon Echo / Echo Dot / Amazon Tap directly to turn your devices on / off.Remote ON/OFF Your Lights Garage Door on/off from anywhere by Phone Mode conversion tutorial video pay attention 1527 remote control (remote control needs to be purchased separately) (without batteries) Frequently Asked Questions How to configure with ewelink app? Please noted it support 2.4G wifi only,if your router with dual bands and same SSID,please close 5G firstly or change to different SSID.When pairing,put the relay close to your router,your phone have to connect to the same 2.4G wifi. When pairing,make sure to put it close to your router and your phone have to connect to the same 2.4G wifi. 1.Download ewelink app from Google Store or App Store,register an account. 2.Power up the relay with USB DC 5V or AC 85-250V.please check if light will flash 2 short 1 long,if so,tap ewelink app and select quick(touch)mode,ewelink will find your SSID automatically,enter your WIFI password(make sure correct),it will be configured soon. 3.If quick mode doesn't work,or if you change to new router,please configure with compatible mode. long press the pairing button until light rapidly blink,then finish as the instruction in ewelink app step by step. How to program with 433MHZ RF? 1.Program RF as channel.If you need to program with channel 1,press R1 button for 3 second,RF indicated light will be on,release the R1 button. 2.Long press the key on your 433Mhz RF,it will be done.same to R2 R3 R4 button. How to Remove the RF code? long press the RF paring button for 15 seconds,the RF light will be on firstly,then will be off,the pairing code will be removed. Match the remote control