1CH 2CH 4CH Tuya RF WIFI Switch Module This product is a wireless switch supports inching /self-locking mode. Users can add the device to the APP Smart life in order to remotely control connected home appliances or devices. In self-locking mode, customers can remotely turn on/off connected devices immediately. When in inching mode, customers can have two wiring ways to select, and you can set the inching time in APP . WIFi control model, no need to program. No matter where you are, you only need to download a APP to connect the wifi and control the cloud. RF mode , you can control the board with RF433 remote controller. All wifi switch support 433MHz remote function. Note: Please make sure to select the right model before buying ,or leave us a message before shipping Features: Input voltage : DC/AC 7-32V ,AC 85-250V(2CH),Micro USB 5V input. Max current : 2200W/10A. WiFi standard : WiFi 2.4 ghz b/n/g. Size : 1CH 69*41*20mm,2CH 100*35*20mm,4CH 78*74*20mm. The life of Relay Model is more than 1,000,00. Default inching Function: Press 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 press the inching and locking button with the light on. Press open relay to pull-on, press close relay to cut off. Noted : Your have the correct wif password. Your smart phone or tablet must have access 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). Include: 1* wifi module 1* manual 433MHz Remote Please note: The remote does not contain batteries.