Set Of 4 Radio-Controlled Sockets For Convenient Switching On And Off Of Electrical Appliances And Lamps Up To 1000 W Indoors Radio-Controlled Sockets With Increased Protection Against Accidental Contact: Plastic Plates Seal The Contacts Of The Socket Outlet 4-Channel Handheld Transmitter (433.92 Mhz) For Universal Control Of Single Or Multiple Receivers Simultaneously - Up To 25M Range Simple And Flexible Use Through Self-Learning Coding