"...for example by Power over Ethernet."
Bazza suggested providing power "... for example by Power over Ethernet."
Well, if you're going to be running a cable now, then (for some applications, e.g. actuators, sensors) just dispense with the remote Smarts. Use the simpler old-school, hard-wired gadgets that can last for 20 years. The Smart control box would be under the stairs, or in the basement. There may be no need for Smarts at the remote end.
I recently updated my Alarm Control panel from a mechanical key switch panel to an RFID panel. The first key switch panel had lasted over 25 years. The new wired-in RFID panel was $10 delivered.
Once you're running cables to a given location, then there may be better faster cheaper options than wireless Smart Home du jour gadgets. At least in some applications.
Just something to consider while drilling holes and pulling cables.
Biting the hand that feeds IT
