Busch-Dimmer®, Flush-mounted devices, LED dimmer with rotary actuation, , Busch-Dimmer® insert LED-Dimmer With rotary control, 2way On-Off switching and soft-catch.Leading Edge control. 2-wire connection (neutral conductor not required) Optimized for dimming of Philips retrofit LEDs (LEDi). For incandescent lamps, 230V tungsten halogen lamps and low-voltage halogen lamps with conventional transformers or electronic(LC) transformers and dimmable halogen energy-saving lamps. Mix operaton of LEDi with conventional loads possible. Low-noise level by MOSFET transistors. With electronic short-circuit protection.With electronic overload protection. With adjustable minimum brightness. Without cover plate. Rated voltage: , +10 % / -10 % Rated frequency: 50 Hz/60 Hz Rated power: 2 - 100 W/VA Protection class (Device): IP 20 Temperature range (Device): 0 °C to 35 °C IEC 60669-2-1, British Standard EN 60669-2-1