... sealed relay output (AC 250V/10A relays, 5A fuse contacts). Receiver: F21-RXCApplicationsDoors, entrance, gates, winches, pumps, crushers, lighting, conveyor belts ... ”1 rotary start keyF21-E16 single step pushbuttonsFeatures 2/4/6 single -doubel step pushbuttons1 key magneticLow cost, low power consumption ... 3V DC (2 AA batteries last up to 4 months)Receiver power: 380V/220V/110V AC or 12V/24V/36V/48V ...