Dimmer switch control unit for electronic ballast 1-10V, 1 normally open contact not potential-free 600VA and 1-10V control output 40mA. Minimum brightness and dimming speed adjustable. With children's room, snooze and light alarm circuit as well as constant light control and master-slave operation. Also with light scene control via PC or with radio buttons. Encrypted radio, bidirectional radio and repeater function can be switched on. Standby loss only 1 watt. Installation in the 230V mains connection cable, for example in false ceilings and lights. 166mm long, 46mm wide and 31mm high. With cable strain relief. Zero-crossing switching to protect contacts. Also for controlling LED converters with passive 1-10V interface without auxiliary voltage up to 0.6mA. Above that with auxiliary voltage. The set brightness level is saved when switched off (memory). In the event of a power failure, the switching position and brightness level are saved and, if necessary, switched on when the supply voltage is restored. The minimum brightness (fully dimmed) can be set using the %lamp rotary switch. The dimming speed can be set using the dim-speed rotary switch. The load is switched on and off using a bistable relay at the EVG output. Switching capacity of fluorescent lamps or low-voltage halogen lamps with EVG 600VA. By using a bistable relay, there is no coil power loss and no heating as a result, even when switched on. After installation, wait for the automatic short synchronization before connecting the switched consumer to the mains. The buttons can be taught in either as directional buttons or as universal buttons: The directional button is then switched on and dimmed up at the top and switched off and dimmed down at the bottom. A double click at the top triggers automatic dimming up to full brightness at dim-speed. A double click at the bottom triggers the snooze function. The children's room switch is operated with the upper button. As a universal button, the direction is reversed by briefly releasing the button. With children's room switch and snooze function. Light alarm switch: A correspondingly programmed radio signal from a timer starts the wake-up function by switching on the lighting with the lowest brightness and slowly dimming up to the maximum brightness within 30 minutes. A short press (e.g. of a radio hand-held transmitter) stops the dimming up. Children's room switch, if activated: When switching on with a longer button press (universal button or direction button at the top), the light is switched on with the lowest brightness after approx. 1 second and, as long as the button is continued, it is slowly dimmed up without changing the last saved brightness level. Snooze function, if activated: (universal button or direction button at the bottom):A double pulse dims the lighting from the current dimming position to the minimum brightness and then switches it off. The dimming time of 30 minutes depends on the current dimming position and the set minimum brightness and can be shortened accordingly. The lighting can be switched off at any time during the dimming process by briefly pressing the button. The LED under the upper rotary switch accompanies the programming process in accordance with the operating instructions and indicates control commands during operation by flashing briefly.