Delay switch UC. 1 normally closed contact, not potential-free, 10A/250V AC. Standby loss of only 0.7 watts. Designed for built-in installation. Dimensions: 45 mm long, 45 mm wide, 18 mm deep. Contact switching at zero crossing to protect contacts and consumers. State-of-the-art hybrid technology combines the advantages of wear-free electronic control with the high performance of special relays. Universal control voltage of 8 to 230V UC, galvanically isolated from the supply and switching voltage of 230V. By using a bistable relay, there is no coil loss and no heating even when switched on. After installation, wait for the automatic short synchronization before connecting the switched consumer to the power supply. Delay time adjustable from 1 to 12 minutes using the upper rotary switch. Response delay adjustable from 0 to 12 minutes using the lower rotary switch. Function: When the control contact (light switch) is closed, the response delay begins, after which the fan is activated. Once the control contact is opened, and if a set response delay has already elapsed, the set fallback delay (run-on time) begins, after which the fan is switched off. This delay switch can be controlled by all dimmers EUD12 and EUD61 even at the lowest dimming setting.