The radio frequency remote control adopts radio frequency technology, the working frequency is 433MHz, and the signal is stable.Highpower load: The relay adopts 40A relay, which can load highpower electrical appliances to longterm stable control.Working mode: momentary, switching, locking mode.Strong Signal: Using RF technology, it can penetrate walls, floors and doors to control receivers anywhere within a reliable distance. The maximum range is up to 984 feet with no obstacles.WIDE APPLICATION:This remote relay switch used in lamps,electric doors,water pumps, motors, ,gate,industrial control and security industry and other fields.Colour:white + blackMaterial:Plastic + MetalSize:54 x 48 x 28mmPackage Contents:1 x Remote Control Switch2 x Remote ControlOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/ 13cm.