Thanks for all the advice and after looking around, I feel that the CEC option is the best one but, unfortunately, is out of my budget. I’ve stumbled across this suggestion which looks like a neat (and cheaper way of getting the same effect.

https://forum.magicmirror.builders/topic/2077/pir-sensor-sleep-lcd-monitor

What’s everyone’s thoughts on it? If it wouldn’t work then could you instead connect to the remote control IR input and force standby that way?

Hi,

I’m looking for a monitor right now to use in a PIR setup to save on power. My concern is that the monitor will display “no signal” when the HDMI signal is cut. Should I be worried about this and does anyone know how to get around it?

Thanks,
Steve