Product Overview
Introduction
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Product Name |
SONOFF Zigbee Motion Sensor |
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Product Model |
SNZB-03P is a low-power Zigbee 3.0 protocol-based motion sensor that utilizes infrared sensing technology to detect moving objects in real-time within its environment. It supports smart scenes linking with other smart devices, making it easy to achieve functions like automatic lighting when someone enters a room and turning off lights when the area is vacant, perfect for hallways and corridors. It can also be used for security purposes, such as detecting unauthorized entry. It can trigger a camera to record a video, activate a sound alarm through the gateway, and send app notifications to alert you, among other capabilities.
Highlights
- 5-Second Ultra-Fast Motion Detection
Lights on the moment you walk by! Enjoy instant response with detection speeds as fast as 5 seconds, and automatic shut-off after you leave — perfect for saving energy without lifting a finger.
- Long-Lasting Power with 3-Year Battery Life
Forget constant battery changes! Equipped with a high-capacity CR2477 battery, the SNZB-03P lasts over 3 years for worry-free performance.
- Reliable Local Smart Scenes
No WiFi? No problem. Thanks to Zigbee local automation, your smart scenes still run smoothly as long as your devices remain powered, ensuring uninterrupted control even during network outages.
- Smart Home Security Companion
More than just motion sensing. The SNZB-03P doubles as a home security sensor, capable of:
- Triggering cameras to start recording
- Activating sirens via Zigbee gateway
- Sending real-time app alerts
Keep your home and loved ones protected — anytime, anywhere.
Applications
- Automatic Lighting Control
Automatically turns on the lights when someone enters the room and turns them off after a delay when no motion is detected, saving energy and improving convenience.
Ideal for areas like entryways, hallways, bathrooms, closets, and basements.
- Security and Intrusion Alarm System
Detects unauthorized movement when doors and windows are closed, triggering alarms and sending alerts to your smartphone.
It can be linked with smart cameras to start recording automatically.
Specification
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Model |
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MCU |
EFR32MG22 |
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Input |
CR2477（3V） |
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Colour |
White |
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Product dimension |
44x44x65mm |
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Net weight |
54g |
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Casing materials |
PC |
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Wireless connection |
Zigbee 3.0 IEEE802.15.4 |
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Pairing time |
180s |
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Communication distance |
Indoor environment 30m |
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Applicable place |
Indoor |
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Detection angle |
110° |
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Detection distance |
6m |
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Working temperature |
-10°C ~ 60°C |
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Working humidity |
5-95%RH, non-condensing |
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Working height |
Less than 5000m |
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Certification |
CE/FCC/ISED/RoHS |
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Executive standard |
EN IEC 62368-1 |
Key Features
eWeLink Platform
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Notice: This functionality is available only when the device is paired with the eWeLink app. For capabilities when the device is paired via Matter with Alexa, Google Home, or other platforms, refer to Key Features >> Compatible Zigbee Hubs List |
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Device Home Page Functions |
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Key Features |
Feature Description |
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Battery level |
The current battery level of the device. |
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Motion Detected Status |
Current device detection status. |
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History Record |
Records of device status changes. |
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Device Settings |
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Key Features |
Feature Description |
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Third-party Platforms |
Alexa |
Motion detected; No Motion detected |
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Google Home |
Motion detected; No Motion detected |
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SmartThings |
Motion detected; No Motion detected; Battery Level query |
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Alice |
Motion detected; No Motion detected |
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IFTTT |
Motion detected; No Motion detected |
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Assign location |
Set up the home and room where the device is located. |
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Share |
The device can be shared with other eweLink accounts. |
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Smart Scene |
Trigger Condition |
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Execution Action |
Unsupport being the smart scene execution device. |
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Push notifications |
After turning on "Push notifications", also make sure to grant notification permissions in Phone Settings > Permissions for the eWeLink app. This allows you to receive push notifications when the device status changes.
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Detection Duration |
It can be triggered again after no motion has been detected for the duration.
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Delete Device |
Remove the device from the eWeLink platform. |
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Compatible Zigbee Hubs List
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Platform |
eWeLink |
Home Assistant via Z2M |
Alexa |
SmartThings |
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Zigbee Hub |
ZBBridge |
ZBBridge-P ZBBridge-U, NSPanel Pro, iHost |
ZBDongle-P/-E |
Amazon Echo (Plus 2nd, Echo 4th, Show 2nd) |
Samsung SmartThings Hub V3 / Aeotec V3 |
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Motion Detection |
√ |
√ |
√ |
√ |
√ |
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History Record |
√ |
√ |
√ |
Not Guaranteed |
Not Guaranteed |
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Custom Detection Duration |
× |
√ |
√ |
× |
× |
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Ambient Brightness(Bright/Dim) |
× |
√ |
√ |
× |
× |
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Local Scene |
× |
√ |
√ |
Not Guaranteed |
Not Guaranteed |
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Notice:
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Installation and Configuration Guide
① Motion sensor
② Button
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Button |
Description |
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Press & hold 5 seconds |
Device enters the pairing mode. |
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Single press |
Effective communication distance verification. |
③ Magnetic base
④ LED indicator (Red)
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LED indicator status |
Description |
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Flash slowly for 180 seconds |
First-time power on/press and hold button for 5s to enter pairing mode. |
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Keep on for 3s and then keep off |
Paired successfully. |
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Exit flashing slowly and keep off |
Distribution failure/timeout. |
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Flash once quickly |
Not added to the gateway, and short press the button. |
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Flash twice quickly |
Added to the gateway and online, and short press the button. |
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Flash slowly for 30 seconds |
Abnormal communication. |
Power On the Device
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Use a coin or another tool to unscrew the battery cover. |
Take out the battery insulation sheet to power on the device. |
Add Device
eWeLink Platform
Download the eWeLink App & Add SONOFF Zigbee Gateway.
Open eWeLink to scan the QR code on the Quick Guide or the device itself to add the device.
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Compatible Third-party Platform
If you're using a third-party Zigbee gateway, please refer to the corresponding app for detailed instructions on how to add the device.
Installation
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Effective Communication Distance Verification
Install the device in the desired place, then press the Pairing button on the device. The LED indicator flashes twice means the device and the device under the same Zigbee network (the router device or hub) are in the effective communication distance.
Detection zone
The sensor has a detection range of approximately 6 meters and a detection angle of around 110 degrees.
FAQ
1. What is SNZB-03P, and what does it do?
The SNZB-03P is a low-power Zigbee 3.0 motion sensor that uses infrared technology to detect motion in real time. It can be used for smart automation (like turning lights on/off) and home security (such as triggering alarms or cameras when motion is detected).
2. Can SNZB-03P function without Wi-Fi?
Yes. As a Zigbee device, SNZB-03P supports local scene execution, meaning automation can still run even if your Wi-Fi goes offline, as long as your Zigbee hub and devices remain powered.
3. What is the motion detection range and angle?
It typically detects motion about 6 meters and has a horizontal field of view of around 110°, ideal for hallways, corridors, staircases, and entrances.
4. How fast does it respond to motion?
It supports rapid detection, triggering linked actions in as fast as 5 seconds after detecting motion or sensing vacancy.
5. How long does the battery last?
Powered by a CR2477 coin cell battery, SNZB-03P offers over 3 years of battery life, depending on usage frequency and environment.
6. Can it be used for home security?
Absolutely. It can:
- Trigger cameras to record upon detecting movement
- Activate sound alarms via Zigbee gateway
- Send real-time notifications to your mobile phone
This makes it an excellent motion-based intrusion alert sensor.
7. Can I mount it on a ceiling or wall?
Yes. The sensor is designed for flexible mounting and can be easily installed on walls, ceilings, or in corners using adhesive or screws.
Troubleshooting
1. The sensor is not detected during pairing.
Make sure your Zigbee hub is in pairing mode.
Press and hold the pairing/reset button until the LED indicator flashes.
Ensure the battery is inserted correctly and has power.
Try bringing the sensor closer to the hub during pairing.
2. Motion is not being detected.
Ensure the sensor is not facing direct sunlight or heat sources, which may affect infrared performance.
Check that the sensor is within the motion range (6 meters) and correctly aligned.
Verify the sensor is powered on and properly mounted.
- If there are materials like glass, acrylic, or walls between the sensor and the moving object, detection may fail. These materials can block infrared radiation, which is essential for motion sensing.
- The sensor may not detect motion if the target is not moving or moving too quickly across the sensing area. For accurate detection, moderate and consistent movement is ideal.
- If the ambient temperature is too close to the temperature of the human body, the sensor may have difficulty distinguishing motion due to low infrared contrast. Performance may be reduced in such conditions.
3. Sensor reacts too slowly or not at all.
Check for Zigbee network delays or weak signal. Consider adding a Zigbee router to improve connectivity.
Make sure the cooldown period (after motion is detected) isn’t delaying further detection — adjust via platform settings if applicable.
4. Battery drains quickly.
Avoid frequent triggering in high-traffic areas — adjust motion sensitivity or cooldown time.
Use a genuine CR2477 battery from a reliable brand.
Confirm no firmware issues or misconfigurations are causing excessive polling.
5. No notification or scene trigger.
Ensure automations or scenes are correctly set in your smart home platform.
Check that the sensor is online and responsive in your Zigbee coordinator UI.
Confirm that permissions and notification settings are enabled on your mobile app.
Know more
For a detailed guide and review of the SONOFF SNZB-03P, visit our free course at the SONOFF Academy.