SONOFF SNZB-03 – Zigbee Motion Sensor


【Any Motion, Even Visble】An instant alert notification will be sent to your phone whenever the motion sensor is detected. By binding the camera, you can view what’s going on in your home.
【Smart Scenes, Work With WiFi Devices】By simply setting a smart scene to turn on your WiFi smart switch automatically. Make your life smarter.
【Easy Installation & Wider-angle, Long-distance Detection】Using 3M adhesive to easily mount the sensor at your ideal locations. With the detection distance of up to 6M and angle of up to 110°, a better detection area will be covered,
【Low-battery Notification】Replace the battery in time with a notification when the battery life is 10% remaining.
【Note】SNZB-03 can not work with Google Assistant. Zigbee Bridge and batteries are required. Keep a distance of less than 80M between SNZB-03 and Zigbee Bridge (open space).

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Any Motion, Even Visible

Link a camera to the motion sensor and place the sensor almost anywhere home, then you can view what’s going on in your home through the camera on the sensor page of APP.Wider-angle & Long-distance Detection

Can provide detection distance of up to 6M and angle of up to 110°when the sensor is working, which ensures the suspicious motion near your house is detected even earlier.Smart Scene, Awakes up Your Home

Want the light to turn on automatically when you go into the hallway? Simply set a smart scene to active your home in the action.Intelligent Security, Simple Installation

Simply use our included 3M adhesives to get the motion sensor mounted in your ideal locations just in seconds.Low-battery Notification

You will get a notification of low-battery level when the battery life gets 10% remaining.

SONOFF SNZB-03 Zigbee Smart Zigbee Motion Sensor Detector Sensor Smart Home Security Work With SONOFF ZBBridge via eWeLink APP

Note 2: SNZB-03 must be used with ZBBrigdge.

If your concern is not only about home security but about using motion to turn on or off the light, well, SONOFF SNZB-03 maybe makes you feel amazing.

This Zigbee motion sensor is an extra-handy smart device for placing anywhere in your home to detect motion and trigger alarms. That means the sensor will send an instant alert notification to your mobile phone whenever the motion is detected if this security system is armed. If you have a SONOFF ZBBridge, you can connect the sensor to it to activate Wi-Fi devices, not merely Zigbee devices. For example, you can set a scene for your living-room light so that it will automatically turn on when you walk through the living-room.

The new camera feature is used to make you know who is approaching your home and capture the video ever earlier than before. Boasts 110°view field and 6m detection rang and you can early receive an alert message of someone’s presence, accordingly taking measures to reduce the possibility that your house is threatened. Share control is available for multiple users to check and monitor your home together. Easy and tool-free installation, 3M adhesive installation significantly saves your time. Powered by the battery which is convenient to stick it on any place that you want to monitor.



Additional information


Product Type

ZigBee Motion Sensor



Wireless protocol

Zigbee (IEEE 802.15.4)





Certified Compliance


Works With

Customer Reviews

Based on 10 reviews
Donald L
Reliable product

I've installed two Zigbee motion sensors to trigger automations in Home Assistant and both have worked flawlessly. I've ordered a third for another project.

Adam Rojdl
Works well

I can only compare it with the IKEA Motion Sensor - main difference is the Sonoff one seems to have little larger range (both in distance and angle) and slightly faster detection time. It's also significantly smaller. I have it paired via Home Assistant (ZHA) and haven't experienced any reliability issues after several weeks.
Minor negatives are that it's very difficult to open (to pair or exchange batteries) and has limited mounting options (e.g. no screw mount like the IKEA sensor) - it comes with double sided sticker, but I don't want that in my wall, so I had to 3D print a wall mount.

Helmut Muller
Motion detection simple and easy

A ZigBee end device is only as good as the Coordinator. I am using this with the ZigBee 3.0 Dongle plus and the results are excellent. No delay, no dropped connection and best of all battery life of more than a year if used correctly. Overall a 10/10. Excellent for Home assistant and can be used with Google home via Home assistant.

Giving problems every year

Problem again is with the battery ( I have 15 motion sensors in the house and 1 is having this problem)
The battery percentage isn't published anymore.
It only gives a flashing %
It starts every time with a constant occupied mode that doesn't change.
After removing the battery which isn't empty, the problems with the battery % starts.
But the motions are detected correct. Very weird, already ordered a new sensor...again like every year.

Sorry for the inconvenience, our customer service team will contact you to help you solve this issue.

Martin J
deliverd on-time, one of 3 works fine

Package delivered on-time. Pairing process works very well.

Out of 3 sensors only one works OK. Two sensors often report detection when there's nothing present. They also fail to report when the area is clear - in HomeAssitant it shows and continued movement. This makes them useless.

On top of that all sensors suffer from a very short range. I'm using a Sonoff Zigbee 3.0 USB Dongle Plus and with a clear line-of-sight from the antenna to the sensor, max range is about 6m, well below advertised 80m. With a thin wall, distance shrinks to about 3m.

Sorry for the inconvenience, our customer service team will contact you to help you solve this issue.

SONOFF SNZB-03 - ZigBee Motion Sensor

Bought 4 SNZB-03.
One is out of service, message " Current battery is low, please replace the battery in time" since the first day, so I put a new battery but the message reappeared and, worst, the new battery falls to 2V ( instead of 3.4 mesured before installation ) one day later > device put in waste bin....

S Barnes
I've bough about 10 Need them to keep 2 online

More than frustrated. Bought the ZB model and they will not stay online. Also bought some of the button switches. The too drop offline. Pain in the butt.

The only Sonoff sensor that works every time is the RF Motion Sensor. Works all the time. Wow.


Well, I'd like to leave a good review but this is the first device from Sonoff I honestly can't. I bought 8 of them all at once since all the minir2,19 of them, and the basics,3, worked fine. The problem is I never know which one will actually work. On the first day, every one of them connected and set up fine. Today less than a month later one doesn't work at all, I suspect a bad battery and the rest are not reliable. I have ordered some new batteries even though they read fine in the ewelink app. I'm using with the sonoff zigbee hub.
I suggest buying several from different companies and doing a longer test with them and buying the most reliable after some time, maybe 6 months to a year.

Sorry for the inconvenience, our customer service will contact you to help you solve this issue.

Great product and fast delivery from ITEAD

Sonoff products are reliable, effective and get the job done. Very glad ITEAD carried them and was able to deliver them very quickly - saved a lot compared to buying it from Amazon.

Ugly but worth every cent

It is an ugly looking sensor, but despite its looks one of the best on the market. I have been using the Sonoff products for many years and have installed hundreds of their units. Their Zigbee products are great, easy to set up and are a breeze to integrate with Home Assistant. Over time they have proven to be reliable and value for money. The choice to go for larger batteries and that offer a longer installation life makes maintenance a pleasure. Of course, because it reports the battery life, you can easily setup routines to pre-advise you about the need for battery replacement. They did a great job with the ZigBee motion sensor.

SONOFF SNZB-03 - Zigbee Motion Sensor
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