86 wall-mounted concealed structure, simple installation mode, no need to modify the wall, any combination. Can easily and accurately control smart devices such as real lights, curtains, air conditioners, scenes, etc., without hands-on, can control Tuya ecological devices. Smart home interconnection, scene mode, device automation, remote APP control. This product is a multi-function composite switch. The switch key can be set as a normal switch, scene switch, dimmer switch, curtain switch, and thermostat switch. Supports custom switch names, up to 8 letters in English mode, regardless of upper and lower case., Manufacturer: Vjsujehgy