This is a simple circuit which controlls a relay with both LDR and PIR technology. you can supply 12v AC by connecting a 12v transformer to the 2 pinned **SCREW** header.If you dont have a transformer, you can directly connect a 6v battery to power this through the **'+DC6V' header**. The LDR mode turns ON the relay when it's dark while the PIR mode turns ON the relay when theres a motion within it's range.There are two switches that controll the LDR and PIR sensors seperately. you can eneble both at the same time or seperately according to your desire. The 3 pin SCREW header is the the part which carries the load in the relay. Connect the COM and NO pins to any kind of circuit as a switch according to your relay's capacity and your good to go! (If your not sure about how relays work, I suggest you to watch a video or check it out in the internet before doing this project) hope you like this project B) if you have any questions, s=ask in the comment sectionand ill reply ASAPB)