The wireless signal through walls, floors and doors. You can turn on/off the receiver with transmitter (remote control) from any place within a reliable distance. It applies to light lamp, auto door, window, lifting equipment, motor controller, water pump, hoist, industrial controller and any others security etc field. Features - Color: Black. - Material: Plastic. - Size: About 5.5 x 3.1 x 1.5 cm. - Wireless control, easy to install. - The wireless signal through walls, floors and doors. - You can turn on/off the receiver with transmitter (remote control) from any place within a reliable distance. - It applies to light lamp, auto door, window, lifting equipment, motor controller, water pump, hoist, industrial controller and any others security etc field. Specifications - Working voltage: DC12V - Operating frequency: 315MHZ / - capacity: no more than 10A/250VAC; - 10 a / 30 - Reception sensitivity: >-105db - distance: 10-30 meters Package list: 1 x Receiver 1 x Transmitter(battery is not included)