Features: This Product Uses The Computer As The Core Circuit Design, With Internal Digital Encryption To Ensure That The Products Of The Technical, Performance, Reliability Between Users And To Avoid Jamming Caused By The Outside World, Full Remote Control Beyond The Obstructions,product Can According To The Users Needs To Increase The Use Of Multiple Wireless Remote Control Mitter,it Will Let You Reap The Product Of Modern Radio Technology And Bring You High Quality Of Life Fun And Charm. With Abcd Buttons Suitable For Drop Light, Crystal Lamp, Modern Low-pressure Lamp, Absorb Dome Light, Day Flower Lamp, Fluorescent Lamp, Energy-saving Lamps, Exhaust Fan, Etc. It Can Be Used In Household, Stairs, Corridor, Washroom, Toilet, Workshop, Warehouse, Garage, Factory Lighting, Etc. Fast And Easy To Install, Not Obstructed By Walls, Capable Of Connecting Any Loads. Remote Controller And Switch Can Be Used Simultaneously For Ease And Remote Distance:more Than 25 Meters Indoor