1、This switch designs reserve a variety of working methods, inching, self‑locking, interlocking. 2、The wiring is simple, directly connected to the neutral wire and the output is directly connected to the load. 3、The remote control distance is 20 meters/66ft in open space (signal can pass through wall to realize control.) 4、Suitable for household water pumps, household lamps, motors, exhaust fans, fish pond aerator, garden irrigation, etc. 5、This wireless control switch use high‑quality transformer, 40A relay, longer life, long‑term use. 1 x Controller2 x Remote Control Conditon: 100% Brand NewItem Type: Wireless Remote Control SwitchMaterial: ABSColor: As Pictures ShownWorking Voltage: AC220VWireless Frequency: 433MHZElectric Shock Capacity: 40A (Safe Load Current is Used within 20A)Remote Control Distance: Approx. 20 Meters/ 65.6ft in Open Space (Can be used through Wall)Self-Locking Mode: Press ON to Open, Press OFF to CloseInching Mode: Press to Work, Unpress Stop WorkingInterlock Mode: Press ON to Open, Press OFF to Close110V Maximum Load: Within 1.5KW220V Maximum Load: Within 3KWRemote Control Battery (Built-In): 80mah Button Battery