1 normally open contact, not potential-free, 16A/250V AC. Standby loss only 0.5 watts. Modular device for mounting on DIN-EN 60715 TH35 rail. 1 pitch unit = 18mm wide, 58mm deep. Contact switching at zero crossing to protect the contacts and consumers. State-of-the-art hybrid technology combines the advantages of wear-free electronic control with the high performance of special relays. Control voltage 230V and additional galvanically isolated universal control voltage 8..230V UC. Supply and switching voltage 230V. Very low switching noise. Run-on time 1 to 12 minutes adjustable with the upper rotary switch. Response delay 0 to 12 minutes adjustable with the middle rotary switch. Permanent on and permanent off switch with the lower rotary switch. Function: When the control contact (light switch) closes, the response delay AV begins (unless set to 0), at the end of which the fan is switched on. When the control contact opens and provided that a set response delay has already expired, the set release delay RV (run-on time) begins, at the end of which the fan is switched off. This run-on switch can be controlled by all EUD12 and EUD61 dimmers, even at the lowest dimming position.