PoE would be great, however most of the PIR’s seem to run on 1.5/3Volts and PoE doesn’t usually go down that low. If I recall PoE switches are either 12/48Volts.
I wonder if it’s worth looking on ebay for a secondhand propriety system and see how they power them from the main panel. If your any good with electronics there maybe something you could retro fit the power delivery to Smart PIR’s.
Many Z-Wave PIR sensors can be powered by USB if USB powered when first included into the network. What country are you located in Z-Wave offerings differ by world region.
I do not understand what you mean by microwave.
What do you mean by a “smart” sensor? People here use OH to provide the smart logic for their home system.
… that use microwave detection as well as / instead of infrared. Meant to be more reliable in some cases.
What do you mean by a “smart” sensor?
Good point, the same sensor I linked to above just has a normally-closed relay switch output for integration into other systems. Sometimes called a ‘zero-volt’ connection. I think this is common for many ‘commercial’ motion sensors. By smart, I was really thinking of some element of ethernet / wifi / zwave / zigbee comms talking to some kind of service / app somewhere. That might be e.g. HAB directly (good) / IFTTT (OK) / proprietary cloud (less good). Unfortunately the ‘smart’ sensors are nearly all battery - presumably the designers think that’s what non-commercial consumers want.
Are you afeared of spurious detections, or missing one? The dual-tech pir/mwave sensors are geared more towards avoiding false alarms, rather than offering extra sensitivity. Makes a good combination though, PIR likes to see movement across the field of view, mwave towards/away.