Off-delay timer. Standby loss 0.5 watt only. Zero passage switching to protect contacts and consumers. State-of-the-art hybrid technology combines advantages of nonwearing electronic control with high capacity of special relays. 230V control voltage and additionally 8 to 230V UC electrically isolated universal control voltage. 230V supply voltage and switching voltage. Very low switching noise. Off-delay time settable from 1 to 12 min with the top rotary switch. Operating delay settable from 0 to 12 minutes with the middle rotary switch. Permanent ON and permanent OFF with the bottom rotary switch. Function: When the control contact (light switch) is closed the operate delay AV starts (if not set ’0 minutes’), on time-out the fan is switched on. The set release delay RV (delay time) starts when the control contact opens and if a set operating delay has elapsed. The fan ­switches off on time-out. This off-delay timer can be controlled by all dimmer switches EUD12 and EUD61 even in the minimum dimming position.