EwelinkWifi 4 Channel Relay Use forRemotely give a pulse signal to1. turn on/off Lights,Lamps and other home appliance.2.turn on/off Garage Door,Door Acce3.control DC Motor,AC Motor to Forward and Reverse Overview: This product is a 4 channels universal WiFi wirele smart switch with RF 433MHzAnd Bluetoothmodule, for your smart home system to remotely and automatically turn on/off home appliances and electronic devices by phone APP. It also can be controlled by RF remote controller indoors. It can connect and control four appliances on APP at the same time, and you can independently turn on/off each of the four gangs. It also supports timing turning on/off the appliances at a specified time, and share to others so that you can control your smart home together with your family. You can also voice control your home appliances by Alexa, and for Google Home/Nest,IFTTT, and enjoy intelligent life and make your home smarter. Features: *App Support: Free iOS and for Android mobile Tuya APP/Smart Life APP.*Sync Status: Real-time device status provided to App.*Remote ON/OFF: Turn 4 electrical devices on/off remotely from anywhere.*RF Remote control: Turn on/off by 433MHz RF Remote indoors.*3 Working Modes: Switch among interlock/self-locking/inching modes.*Independent control: Control each gang separately in Tuya APP/Smart Life APP.*Supports remotely turn on or off connected appliances, for example light, electric kettle, electric rice cooker, electric curtain, Garage door opener,Motor,etc.*Timing: Supports 8 enabled countdown/single/repeat timing tasks to turn on/off at specified time.*DIN Rail Mounted: Great for industrial control.*Voice Control: Compatible perfectly with Alexa, for Google Home, for Google Nest,IFTTT.*Share Control: Control your smart home together with your family. Specifications: Input voltage : DC/AC 7-32V 85-265V , Micro USB 5V input.Max current : 2200W/10A.WiFi standard : WiFi 2.4 ghz b/n/g.The life of Relay Model is more than 1,000,00.Default inching Function: Pre the open relay by mobile phone, then cut off the pull-on imediately, you can set the inching time in APP , it has the timing-share function at the same time.Self-locking when pre the inching and locking button with the light on. Pre open relay to pull-on, pre close relay to cut off. Noted :Your have the correct wifi paword.Your smart phone or tablet must have acce to APP store or google play.Your router is MAC-open.Your smart phone or tablet has connected to a 2.4g wifi with internet.Default inching time 0.5s , you can set inching time from 1s to 3600s in APP ( smart life / tuya smart).