Greetings. I’m seeking some spark wisdom on my mini project. Looking to borrow signal from one of the PIR sensors feeding my alarm to turn on a CCTV connected screen via a 12v timer relay so the screen will come on when someone enters the corridor then turn off 20sec after they leave. I have a working telecom elite something alarm with lots of stuff wired into it. I can probably figure out which PIR wire I need by having my kids jump in front of the sensor whilst I am using a tester on the panel. I picked up one of 12v relays which I am sure will come without instructions but it is labelled. and a junction box to hide it all in. seems like relay can control both AC and DC. The monitor has external power supply so I could wire it into either. I prefer DC to reduce latency. Screen has 44w max power draw which seems to be within DC rated load. I will pick up some tails to create an extension from the power supply and run it into the relay inside the junction box and run a 12v signal there too. Does it work as a plan? How do I go about splitting the PIR wire on alarm side and wiring up the relay?