Universal dimming switch, Power MOSFET up to 400W. Automatic lamp detection. Bidirectional. Standby loss of only 0.3 watts. Minimum brightness and dimming speed can be set. With children's room, snooze and light switch. Additionally with light-setting control and constant light control. Series installation device for mounting on mounting rail. Universal dimming switch for lamps up to 400W, depending on the ventilation conditions, dimmable energy saving lamps ESL and dimmable 230V LED lamps additionally dependant on the lamp electronics. Switching in zero crossing with soft-on and soft-off for lamp protection. Switching voltage 230V No minimum load required. The set brightness level remains stored when the device is switched off (memory). In the event of a power failure, the switching position and the brightness level are saved and, if necessary, switched on when the supply voltage returns. Automatic electronic overload protection and over-temperature switch-off. Connection to the Eltak