The Sonoff SNZB-03P is basically the grown-up version of their old motion sensor — faster, sharper, and finally not a useless lump in darker rooms. It connects over Zigbee, pairs instantly in ZHA, and exposes motion + lux properly, so you can actually automate lighting like a normal human instead of waiting for the sensor to wake up after a three-year nap.

Detection range is solid for the price, around 6–7 metres in a normal hallway, and it doesn’t false trigger every time your Cavapoo sneezes. Battery life is decent too — real-world around 9–12 months depending on how busy the room is. The lux readings aren’t lab-grade but they’re stable enough to do “only turn lights on when it’s actually dark” without janky behaviour.

It’s plastic, it’s cheap, but it does the job without being a diva. Perfect for hallways, bathrooms, stairwells and utility rooms where you just want a basic motion + lux combo that works with no faff.

Bottom line: if you want a budget sensor that just behaves itself in ZHA and gives you lux control for proper automations, the SNZB-03P is a little banger for the money.