4 way Digital Intelligent Wireless Remote Control Switch. Suitable for drop-light, crystal lamp, modern low-pressure lamp, absorb dome light, day flower lamp, fluorescent lamp, -saving lamps, exhaust fan, etc. It can be used in household, stairs, corridor, washroom, toilet, workshop, warehouse, garage, factory lighting, etc. Remote controller and switch can be used simultaneously for ease and flexibility. Stable signal receiving. Fast and easy to install, not obstructed by walls, capable of connecting any loads. 1 x 12V 23A battery (not included) is needed for the remote control switch., Weight: 0.60847584312 pounds, Manufacturer: HWIREUIGT