Features: Adopts 30Arelay, which can load high-power electrical appliances to ensure long-term stability control. Adopts RF technology ,it can pass through wall, floors and door, control receiver from most place within a reliable distance. Max-range is up to 3000M with no obstacle. This long distance remote switch is used in pumps, mud pumps, motor, lamps, Fans, sprayers, car washers etc. Various types of electrical equipment . The remote control has a long distance and is easy to install. With external antenna, the receiving distance is greatly improved. The output current of the wide-tin plating on the back is more stable, and the work of the insulation grooves is safer and more reliable. The receiver adopts ultra-high sensitivity receiver modules, which has much high anti-interference ability than super-feedback modules and ordinary super-heterodyne modules on the market. Water Pump Remote Control Switch Receiver Only, other accessories demo in the picture are not included! Specifications: Material:ABS+Metal Remote Control Size: Approx.13.5x4.2cm/5.31x1.65inches Switch Size: Approx.12.38x6.8x3cm/4.87x2.67x1.18inches Working frequency: 433MHz/315mhz Working-mode: self-locking, interlocking-mode Output-mode: terminals block Demodulation method: ASK Control method: remote control or manual button control of controller Working-voltage:DC12V-48V Standby power consumption: