Universal dimmer switch. Power MOSFET up to 400W. Automatic lamp detection. Standby loss only 0.1 watts. Minimum brightness or dimming speed adjustable. With children's room and snooze function. For recessed mounting. 45mm long, 45mm wide, 18mm deep. Universal dimmer switch for lamps up to 400W, depending on the ventilation conditions. Dimmable 230V LED lamps and energy-saving lamps ESL dimmable additionally depending on the lamp electronics and the dimming type. Zero-crossing switching with soft on and soft off to protect the lamp. Control voltage, supply voltage and switching voltage 230V. 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 is 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. Automatic electronic overload protection and overtemperature shutdown. The upper % lamp/dim speed rotary switch can be used to set either the dimming speed or the minimum brightness (fully dimmed). The dimming speed also changes the duration of soft on and soft off. The lower rotary switch determines during operation whether automatic lamp detection should be active or special comfort positions: AUTO allows dimming of all types of lamps. LC1 is a comfort position for dimmable 230V LED lamps which, due to their design, cannot be dimmed far enough to AUTO (trailing edge phase control) and therefore have to be forced to leading edge phase control. LC2 and LC3 are comfort positions for dimmable 230V LED lamps like LC1, but with different dimming curves. EC1 is a comfort position for energy-saving lamps which, due to their design, have to be switched on with a higher voltage so that they can safely switch on again when dimmed down even when cold. EC2 is a comfort position for energy-saving lamps which, due to their design, cannot be switched on again once they have been dimmed. For this reason, memory is switched off in this position. Inductive (wound) transformers must not be used in the LC1, LC2, LC3, EC1 and EC2 positions. In addition, the maximum number of dimmable LED lamps can be lower than in the AUTO position due to the design. With children's room switch: When switched on by pressing the button for a longer period, the light switches on at the lowest brightness after approx. 1 second and, as long as the button is continued, slowly dims up without changing the last saved brightness level. With snooze function: A double pulse dims the lighting from the current dimming position to the minimum brightness and then switches it off. The max.The dimming time of 60 minutes depends on the current dimming setting and the set minimum brightness and can be shortened accordingly. The light can be switched off at any time during the dimming process by briefly pressing the button. A long press during the dimming process dims the light up and ends the snooze function. L loads (inductive loads, e.g. wound transformers) and C loads (capacitive loads, e.g. electronic transformers and LED lamps) must not be mixed. R loads (ohmic loads, e.g. 230V incandescent and halogen lamps) can be mixed in as required.