Photoresistor adopt light induction 's strength the syncronisation relay direct controlled load; Pathopoiesis potentiometer adjust sensitivity through adjust potentiometer set starter relay valve value hereat when the dark valve value when module relay pickup hereat bright valve value when relay break; Working voltage 12V quiescent current: 12mA Max power dissipation: 72mA; Output : form direct access to AC 250V10A or DC 30V 10A load; environment temperature: <80 centigrade delay time range: connect to S2 delay 1~20 seconds don't connect to S2 delay 1~200 seconds