SONOFF SNZB-06P Zigbee Human Presence Sensor, 5.8GHz Microwave Radar Built-in Light Detector Motion Sensor, High Precision Detects, Supports Alexa, Google Home and Home Assistant

This was a breeze to integrate with Home Assistant and therefore to add to home automations etc. It has a built in motion/presence sensor together with a light sensor which works well. The light sensor does not give you a result in lux, instead it uses Dark, Medium, Light which is enough to automate lights etc coming on when there is low light etc. Good value for money and so far Im very happy with it. Make sure you use a certified power plug (not included) as I did have a few issues with generic usb plugs until I found one it liked working with.

I have had 3 of these motion detectors now around all my house. 2 of them work no problem, but 1 of them (the one closest to my Zigbee 3.0 USB plus-E) is very temperamental. It will sometimes work perfectly. However, at least half the time, it does not work and is stuck on either clear state or detected state. Thankfully it is not essential to my smart home, but is quite frustrating as I never know if it is going to work or not.

Super easy to add in Home Assistant with a Sonoff USB Zigbee stick. The automations I've tested have been very reliable for people entering or leaving the room The detection is good, even for people sitting still. They do however require USBC power which can limit where you put them.

I love the idea behind this sensor. It’s far cheaper than mm-wave options yet noticeably more accurate than basic motion detectors. I can live with the fact it needs mains power—these sensors do demand a steady supply. I bought two and planned to add several more. At first everything ran smoothly, but one unit suddenly dropped offline. It turns out the sensor must sit almost next to the Zigbee coordinator; put it in the next room and it simply stops responding. Switched the one closer with the one next room and confirmed that it's the range. Unfortunately, customer service was no help. Despite repeated explanations they just asked me—over and over—to move the device closer and give it “more open space”. If your coordinator isn’t in the same room, save yourself the hassle and look elsewhere.

I've had this for nearly a year now and it works well a lot of the time (no issues with Zigbee range in my home) but sometimes the reported occupancy will stay stuck on Detected and it will ignore the minimum detection interval of 15 seconds I set. Changing the sensitivity from High to Medium (there's no correlation with the sensitivity setting, I've tried different values) and back again will clear it but something is clearly wrong with it which is disappointing. The requirement for power via USB is a nuisance too which may be limiting for some use-cases (for example, I'd like to install one in the bathroom because despite the issues, these are still better than simple motion detectors). Overall, I'd still recommend these for the price but they're not perfect.

I use a few of the SONOFF SNZB-03 motion sensors and I think they are great. I have a few different brands of motion sensors and whist some of the others have additional features, these do the job as intended just fine. These sensors are as responsive as any other Zigbee sensors I have and were detected/setup in Zigbee2MQTT in Home Assistant without any problems. Been using them for a few months now and the battery life seems good. I think these are great value sensors with great performance. Recommended.

Brilliant! I've got 5 of these now. They are pretty sensitive and will even pick up through walls but a bit of fiddling with the aim can stop annoyances from this. They connect to Home Assistant through zha really easily and act as a router to boost your zigbee network. We use them to operate automatic lights and as an indicator (via an LED panel) of bathroom occupancy!! The only fail I've had is when trying to use one in my summer house and it just sees through the walls(wood, insulation, plasterboard) as if they were not there, so an almost permanent 'detected' state from waving plants etc. Other than that they are brilliant! All you need is some sort of USB hole to plug them into, attach the magnetic mount with a screw or provided sticky pad and a spot of aiming to get it detecting where you want it to!

These are very small motion sensors. I found them really hard to pair, using a Sonoff USB zigbee dongle. I'm not sure if the problem was with these, or the dongle, or something else. Once paired, they seem to work well, have good range and are very sensitive. There doesn't seem to be a way to reduce the sensitivity which means that my small cat keeps switching the lights on.