Light turn on in the dark and turn off on daytime, intelligent sensor, no need to operate by manual., Working : As shown in the above diagram out of three wire's Red : Load, Blue : Neutral & Brown : Phase. Connect Red & Blue to Load Application where using (i.e. Lighting) & Brown and Blue to 230 VAC input supply. Now it is ready to operate Day/Night mode. For testing keep torch over to the Photocell load will turn ON., Automatic Sensor Light Control Switch/ It can use Street Light, Garden Lights, Incandescent lamp, LED lights., Auto ON at night, OFF at day, 220–240 V AC operation, Handles up to 10 A load, Uses LDR / photocell sensor, Maintenance-free, automatic operation