1+1 normally open contact potential-free 10A/250V AC, 230V LED lamps up to 200W, incandescent lamps 2000W. No standby loss. For built-in installation. 45mm long, 45mm wide, 32mm deep. State-of-the-art hybrid technology combines the advantages of wear-free electronic control with the high performance of special relays. Universal control voltage 8..230V UC. 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. After installation, wait for the automatic short synchronization before connecting the switched consumer to the mains. The functions of the second rotary switch are preselected with the ES/ER rotary switch. The clamp functions are selected with ER. You can choose between 10 functions: 2S = impulse switch with 2 normally open contacts. (2R) = switching relay with 2 normally open contacts. WS = impulse switch with 1 normally open contact and 1 normally closed contact. (WR) = switching relay with 1 normally open contact and 1 normally closed contact. SS1 = series switch 1 + 1 normally open contact with switching sequence 0 - contact 1 (1-2) - contact 2 (3-4) - contacts 1 + 2. (RR) = switching relay (closed-circuit relay) with 2 normally closed contacts. SS2 = series switch 1 + 1 normally open contact with switching sequence 0 - contact 1 - contacts 1 + 2 - contact 2. (EW) = switch-on wiping relay with 1 normally open contact and 1 normally closed contact, wiping time 1s. GS = group switch 1 + 1 normally open contact with switching sequence 0 - contact 1 - 0 - contact 2. (GR) = group relay 1 + 1 normally open contact (relay with alternately closing contact). This relay is not suitable for feedback with the switching voltage of a dimmer switch. Only use the relays ESR12DDX-UC, ESR12NP-230V+UC or ESR61NP-230V+UC for this purpose. The electronics do not have their own power supply and therefore do not consume any current in either contact position. The control current, which activates the microcontroller, only flows during the short control pulse of just 0.2 seconds. It reads the last switching state from its non-volatile memory, switches the bistable relay in the opposite direction accordingly and writes the new switching state back into the memory.