1Stable Remote Control: The Dc 12 volt relay switch comes with wireless receiver, high stability, security and performance. The supplied 2 remote controls transmit strong signal that can pass through wall, floors and doors, steadily control receiver from any place within a reliable distance. 2Secure to Use: The Learning code of 433.92mhz wireless transmission module with low repetitive rate and re?learn mode, when a remote control get lost, you can delete the old code and re?learn a new code to always control it. 3Learning Type Design: The remote control switch adopts learning type button design, any one switch can copy multiple remote control switch, similar products will not have any interference and garbled condition, more reliable in use. 4Professional Switch Relay: The wireless relay switch kit is an ideal remote switch for those hobbyists with home automation Diy projects or business Industrial electrical. The power input voltage is 12V, and each receiver relay capacity is up to 12VDC 10A. 5Usage: Ideal for short and long range turn devices on off wirelessly, anti theft alarm control panels, lifts, boats, motor driven curtain, roller blinds, garage door openers, gate barriers, motorcycles, vehicles, cars, trucks, RVs, electric generator, electric door release locks, etc.