Size:120*72*34mm(US)86*86*34mm(EU) Description: TWO wiring methodsSupport Neutral system and No Neutral system.Support Neutral system,Support single fire system,but you need a capacitor when you use No Neutral system.(capacitor is included.) Wi-Fi direct connectionNo gateway hub is required, just install it and use it.Directly connect to the Internet, you can control with your mobile phone to realize smart life. (Need 2.4GHZ) APP remote control Tuya or smart life APP can be used to remotely control the switch on and off. You can see the open or closed state of the switches from the APP and control it when you are away from home. Link with other smart devicesIt can be connected to other smart devices to realize a convenient smart life together. A home mode can be created and linked with other smart devices to automatically open the light as soon as you go home.