> I also have an impression that Zigbee et al are more friendly to extremely low-power, battery-operated sensors That makes sense. All of my "smart" devices ar

> I also have an impression that Zigbee et al are more friendly to extremely low-power, battery-operated sensors That makes sense. All of my "smart" devices are wired to power because I don't want to maintain batteries, and "power is plentiful" as you said. But I can see why WiFi would be a detriment for battery-powered devices, and why some devices would be annoying to hard wire to power (door/window sensors come to mind). > if you have experience with battery-powered models that work reliably on WiFi I don't. Most of my sensor devices are just generic sensor components wired into a ESP8266 breakout board, plugged into power. Not much that's ready off-the-shelf.