Universal dimmer switch with rotary knob, power MOSFET up to 800W. Automatic lamp detection. Standby loss only 0.2 watt. Minimum brightness and maximum brightness adjustable. Modular device for DIN-EN 60715 TH35 rail mounting. 2 pitch units = 36mm wide, 58mm deep. Universal dimmer switch for lamps up to 800W, depending on ventilation conditions, dimmable energy saving lamps ESL, and dimmable 230V LED lamps additionally depending on lamp electronics. Up to 3600W with power additives on terminals X1 and X2. Zero crossing switching with soft on and soft off for lamp protection. Universal control voltage 8-230V UC, galvanically isolated from supply and switching voltage 230V. No minimum load required. PWM control with 10-24V DC at the PWM and GND terminals. The set brightness level remains stored when switching off (memory). In the event of a power failure, the switching position and brightness level are stored and restored.