86 In-wall concealed structure, easy installation mode, no need to remodel the wall, any match. Custom linkage scene, can quickly switch scene mode. You can easily achieve touch on the lights, curtains, air conditioning, and other intelligent equipment control, no hands, compatible with some of the graffiti ecological equipment. Smart home interconnection, scenario mode, device automation, remote APP control. 4-way composite switch, ordinary switch scene switch any switch., Weight: 0.52029093832 Pounds, Manufacturer: MOLERRI