Radio-controlled extractor hood control. 1 normally closed contact, not potential-free, 10A/250 V AC. Standby loss only 0.4 watts. For built-in installation. Dimensions 52x53mm, 22mm deep. The connection terminals are plug terminals for conductor cross-sections from 0.2mm² to 1.5mm². With the convenient tip radio technology, up to 24 radio universal switches, radio window contacts, Hoppe window handles, and window handle sensors can be learned. Bidirectional radio can be activated. Supply, switching, and control voltage locally 230 V. Contact switching at zero crossing. Bistable relay, which means there is no coil loss power and no heating even in the switched-on state. After installation, wait for the automatic short synchronization before connecting the switched load to the power supply. In the event of a power failure, the switching state is maintained. When power is restored, it is defined as switched off. The motor of the extractor hood can only be turned on when the window is open. If the window is closed, the relay switches off the motor. However, if the motor is turned off before the window is closed, any integrated lighting that may be on will remain on and can be switched on and off at the extractor hood switch. If the motor is turned on in addition to the lighting with the window closed, the relay will switch off. With a radio switch or a local conventional 230 V control switch (a glow lamp current is not permitted), the integrated lighting can also be turned on with the window closed and the relay switched off. Radio window-door contact with battery, dimensions 75x25x12mm, pure white. The window-door contact powers itself with a solar cell from 100 Lux daylight, otherwise for several years with a CR2032 button cell. When closing and opening, the corresponding telegram is sent twice in quick succession each time. Cyclically approx.