Specification: Input Voltage: DC 7V - 32V Max.Current: 2200W/10A Wi-Fi Standard: Wi-Fi 2.4ghz b/g/n Working temperature: 0?-60? Material: ABS Size: 7.5 x 7.3 x 1.8 cm / 2.96 x 2.9 x 0.71 inch Features: ✓Remote control & Voice Control ✓Self-locking Mode and Inter-locking Mode ✓Timing Schedules ✓Device Sharing ✓Group Management Multi-SCENES MODE SETTING Schedule the Smart Wifi Switch to automatically switch on and off, One key turn off all lights when you go out, One key turn on all lights when you come back,It’s simple and easy,Remote control light on/off through various channels, giving you one less thing to worry about in your busy life. 3 WORKING MODEL CONTROL: a, In self-locking mode: 4 channel WIFI Wireless Inching Relay Switch,Independently control 4 device, customers can remotely turn on/off connected devices immediately. b, In inching mode: 4 channel WIFI Wireless Inching Relay Switch,Independently control 4 device, customers can set the time for yourself. Such as turn on 0.5s and then auto-off/ turn on 1s and then auto-off c, In interlock mode: 4 channel WIFI Wireless Inching Relay Switch, 4 relay interlocks, turn on one device every time, and turn off others at the same time. control motor forward and reverse. Notice 1). Your smart phone or tablet should have connected a 2.4G WiFi with internet. 2). Make sure your router is MAC-open. If not, please cancel the router’s MAC filtering setting first. 3). Make sure your wifi is not 5G wifi, because our smart controler doesn't support 5G wifi network. Package Including: 1 x 4 Channel Wifi Relay Switch Module 1 x User Manual See moreDIY Your Smart Home - It can let you DIY a lot of smart projects: smart lights, fans, garage door, humidifier, thermostat etc. If you have any questions about the use, you can contact us at any time, we will help you solve this problem. Our goal is to satisfy every customer. APP Remote Control - That allows the connected device to be controlled via Smart phone as well as traditional switch. Control your light by app wherever you are. One phone can control several smart switches, several phones also can control one smart switch. Device Mode Choose - This wireless switch supports inching /self-locking mode. In the Self-locking mode, when you press the button on APP (or the manual button on the board) for one time, the relay will be on. The relay will be off only when you press the button once again. Device Sharing - DIY Your Smart Home, Support Remote turn on/off, Timing Schedules , Device Sharing, Easy to Share, All family can control home appliances through eWelink app Works from anywhere you have internet connection. 4 Channel Switch Module - each channel independently triggered independent delay, do not interfere with each other. Supports 2.4G WiFi network connection only, doesn't support Mesh wifi system and 5G WiFi network!! Download ewelink APP and register an account, then follow the instruction to complete the wifi configuration. (you may need a wifi extender if you are plan to install it in a place with weak wifi signals).