Impulse switch UC. 1 normally open contact, potential-free 10A/250V AC, 230V LED lamps up to 200W, incandescent lamps 2000W. No standby loss. For flush mounting. 45mm long, 45mm wide, 18mm deep. State-of-the-art hybrid technology combines the advantages of wear-free electronic control with the high performance of special relays. Either universal control voltage 8..230V UC at the control input +A1/-A2 or 230V with up to 5mA glow lamp current at the control input with glow lamp symbol (L)/-A2(N). The simultaneous use of two potentials at the control inputs is not permitted. Very low switching noise. No constant power supply required, therefore no standby loss. By using a bistable relay, there is no coil power loss and no heating as a result, even when switched on. The relay contact can be open or closed when it is put into operation and synchronizes when it is first activated. If this impulse switch is in a circuit that is monitored with a FR12-230V mains disconnect switch, it does not require an additional base load, but the monitoring voltage of the FR12-230V must be set to max. The electronics do not have their own power supply and therefore do not consume any power in either contact position. Only during the short control pulse of just 0.2 seconds does the control current flow, which activates the microcontroller, lets it read the last switching state from its non-volatile memory, switches the bistable relay accordingly in the opposite direction and writes the new switching state back into the memory.