Product Overview
Introduction
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Product Name |
SONOFF Zigbee Temperature and Humidity Sensor |
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Product Model |
SONOFF Zigbee Temperature and Humidity Sensor SNZB-02P is a low-power temperature and humidity sensor that can detect the temperature and humidity of the environment in real time. It can be easily installed anywhere you want, simply by sticking it in place. Customized smart scenarios can be created to control various devices, ensuring your home environment is always comfortable.
Highlights
- Precision Sensor & Rapid Updates
Built with a Swiss-made hygrometer sensor, offering ±0.2°C / ±0.4°F temperature accuracy and ±2% RH humidity accuracy. Data refreshes every 5 seconds, giving you near real-time environmental updates. - Zigbee 3.0 Compatibility
Works seamlessly with Zigbee 3.0 hubs such as SONOFF iHost, NSPanel Pro, ZB Bridge Pro, and ZBDongle-E. Also compatible with third-party Zigbee 3.0 hubs like Echo 4th Gen and SmartThings Hub V3. - Instant Comfort Alerts
Get notified instantly on your phone when temperature or humidity levels go beyond your preset comfort thresholds—helping you maintain a healthier, more comfortable living space. - Cloud History & Exportable Data
Includes up to 6 months of free cloud storage. View historical trends by day, month, or half-year, and export detailed temperature and humidity logs with ease. - Long-Lasting Battery Life
Powered by a CR2477 coin cell battery, offering up to 4 years of battery life under typical use conditions (based on SONOFF lab data; actual performance may vary).
Applications
- Bedroom/Living Room: Monitor ambient temperature and humidity for daily comfort.
- Greenhouse: Ensure stable environment for plant growth.
- Nursery: Maintain optimal conditions for babies and children, etc.
Specification
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Model |
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MCU |
EFR32MG22 |
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Input |
3V⎓ |
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Battery model |
CR2477 |
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Wireless connection |
Zigbee 3.0 (IEEE802.15.4) |
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Net weight |
26.7g |
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Color |
White |
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Product dimension |
45x45x17.7mm |
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Casing material |
PC |
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Applicable place |
Indoor |
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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 |
IEC/EN 62368-1, UL4200A |
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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Current Temp & Humidity |
Real‑time display on the device screen and in the eWeLink App. |
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Historical Chart |
Hourly logs; view by a day, 7 days, month, and half‑year; supports CSV export. |
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Battery level |
The current battery level of the device. |
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Device Settings |
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Key Features |
Feature Description |
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Third-party Platforms |
Alexa |
Temp. query |
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Google Home |
Temp.& Hum. query |
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SmartThings |
Temp.& Hum. query; Battery Level query |
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Alice |
Temp.& Hum. query |
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IFTTT |
Temp. & Hum. trigger |
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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 |
Triggered when the temperature/humidity is greater than or less than the set temperature/humidity. |
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Execution Action |
Unsupport being the smart scene execution device. |
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Temperature Unit |
Switch the temperature unit, and both the device display and the app will update accordingly:
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Comfort level settings |
Set a comfort range. If it exceeds the comfort range, the APP will send a notification reminder on your phone. |
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Report Configuration |
Adjust the Temp. & Hum. reporting threshold or interval to change the data update frequency in the app. |
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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 ZHA |
Home Assistant via Z2M |
Alexa |
SmartThings |
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Zigbee Hub |
ZBBridge |
ZBBridge-P ZBBridge-U, NSPanel Pro, iHost |
ZBDongle-P/-E |
ZBDongle-P/-E |
Amazon Echo (Plus 2nd, Echo 4th, Show 2nd) |
Samsung SmartThings Hub V3 / Aeotec V3 |
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Temperature |
√ |
√ |
√ |
√ |
√ |
√ |
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Humidity |
√ |
√ |
√ |
√ |
× |
√ |
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Battery |
√ |
√ |
√ |
√ |
× |
√ |
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History Records |
√ |
√ |
√ |
√ |
× |
× |
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OTA |
× |
√ |
√ |
√ |
× |
× |
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Scene |
√ |
√ |
√ |
√ |
√ |
√ |
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Notice:
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Installation and Configuration Guide
① LED indicator
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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. |
② Pairing button
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Button |
Description |
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Press & hold 5 seconds |
Device enters the pairing mode. |
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Click, Double-Click, Long Press |
Used to trigger smart scene. |
Power On the Device
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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Long press the button for 5 seconds. |
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Select Zigbee gateway. |
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Wait until the addition is done. |
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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.
FAQ
- What is the battery life of the SNZB-02P?
The SNZB-02P is powered by a CR2477 coin cell battery. Battery life varies based on usage and environmental conditions but typically lasts 4 years. To maximize battery life, ensure the sensor is within range of your Zigbee hub to minimize communication retries.
- Can it be used outdoors?
SNZB-02P is not waterproof, and we do not recommend using it outdoors in an environment where it is easily wetted by water.
Troubleshooting
- The Zigbee signal is unstable and the device frequently goes offline?
If your device often goes offline, it could be due to the long distance between the device and the gateway (we recommend no more than 50 meters through walls), or obstacles/interference blocking the signal. Try adjusting the placement of your device and gateway, or use additional Zigbee router devices to strengthen your Zigbee network coverage. - Missing features after pairing with the eWeLink app?
Please ensure both your Zigbee gateway and the eWeLink app are updated to the latest version. If the device was added using an outdated gateway firmware, remove the device, update the Zigbee gateway, and then re-add the device.
Application Explore
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Kadis SONOFF Temperature Humidity Sensor Holder (From Enthusiast) |
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Easily mount your Sonoff SNZB-02P sensor on the IKEA Skadis board.
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Access Link: Kadis SONOFF Temperature Humidity Sensor Holder |
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Zigbee Sensor Simple Stand For Ams (From Enthusiast) |
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Easily mount your Sonoff SNZB-02P sensor on the IKEA Skadis board.
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Access Link: Zigbee Sensor Simple Stand For Ams |
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Know more
For a detailed guide and review of the SONOFF SNZB-02P, visit our free course at the SONOFF Academy.