Universal dimmer switch. Automatic lamp detection. Standby loss only 0.1 watts. Minimum or maximum brightness and dimming speed adjustable. With children's room and snooze function. Universal dimmer switch, depending on the ventilation conditions. Dimmable energy saving lamps ESL and dimmable 230V LED lamps also dependent on the lamp electronics. Zero-crossing switching with soft on and soft off to protect the lamp. Universal control voltage, galvanically isolated from the supply and switching voltage. No minimum load required. Short control commands switch on/off, permanent control changes the brightness up to the maximum value. An interruption in the control changes the dimming direction. The set brightness level remains saved when switched off (memory). In the event of a power failure, the switch position and brightness level are saved and, if necessary, switched on when the supply voltage returns. From 110V control voltage, glow lamp current 5mA. Automatic electronic overload protection and overtemperature shutdown.