Introduction
Zigbee Temperature Humidity Sensor
User Manual V1.0
SNZB-02UL is a low-power Zigbee Temperature & Humidity Sensor featuring a 2.9-inch high-definition E-Ink display for real-time monitoring and intuitive viewing of ambient temperature and humidity. With multiple installation options, it adapts to various indoor scenarios. After connecting to a gateway, it can also display the time, date, and daily weather information. Use the button to switch pages and view historical data. With gateway-enabled smart integration, it supports a wide range of smart scenes to meet whole-home smart automation needs.
High Accuracy
①
- Slow flashing: device is in pairing mode
- Steady on: Zigbee connection successful
②
- Includes two states: hot and cold
③
- Includes two states: humid and dry
④ Time
⑤ Weather
⑥ Battery Level
⑦ Current Temperature
⑧ Current Humidity
⑨ Date
⑩ External Temperature & Humidity
⑪ Historical data
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Temperature and humidity display can be switched
⑫ Anti-slip Rubber Pad
⑬ Hanging Hook Slot
⑭ Button
- Single press: Switch display pages / effective communication distance verification
- Double press: Switch temperature unit
- Long press for 5 seconds: Enter pairing mode (pairing lasts 3 minutes)
- Long press for 10 seconds: Factory reset
⑮ Battery Cover
⑯ Stand
Note:
1. ④, ⑤, ⑨, and ⑩ require a connection to a SONOFF Zigbee gateway or to Home Assistant via a SONOFF ZB Dongle.
2. There are eight types of weather icons. Their meanings are listed below:
3. If the device loses network connection, the following data will no longer be displayed after 24 hours: time, date, weather, and remote temperature & humidity sensor readings. All information will automatically sync and reappear once the network connection is restored.
When the device is not connected to the network, the screen displays as follows:
Specifications
Download the eWeLink App
Please download the “eWeLink” App from Google Play Store or Apple App Store.
Power on the device
Take out the battery insulation sheet to power on the device.
After powering on, the device enters pairing mode by default on first use, with the signal icon flashing slowly for 180 seconds.
If no pairing is completed within 3 minutes, the device will exit pairing mode. To re-enter, press and hold the button for 5 seconds until the signal icon flashes slowly.
Add Device
① Add SONOFF Zigbee Gateway
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Compatible Gateways |
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Recommended SONOFF Gateways |
ZBBridge-P, ZBBridge-U, NSPanel Pro, iHost |
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Other Compatible SONOFF Gateways |
ZBDongle-P, ZBDongle-E, Dongle-M, Dongle-PMG24, Dongle-LMG21
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② Device Pairing
Enter “Scan”
Scan the QR code on the device
Select “Add Device”
(If the device exits pairing mode)
Long press the button for 5 seconds
The signal icon flashes slowly for 180s
Select Zigbee gateway
Wait until the device is added
Third-Party Compatible Gateways
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Third-Party Compatible Gateways |
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Samsung gateway model |
SmartThings hub V3, AeoTec Smart Home Hub V3 |
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Amazon gateway model |
Echo Plus 2nd, Echo 4th Gen, Echo Show 2nd |
Other gateways supporting Zigbee 3.0 protocol and temperature & humidity sensors. Please confirm with the gateway manufacturer.
Multi-Page Switching
Short-press the button to switch display screens. There are three display pages in total, and the switching sequence is as follows:
Remote Temp. & Humidity Display
Select “Remote Temp. & Humidity Display”on device setting page.
Turn on the switch and choose the device to be used as the remote temperature source.
Tap “Save” in the upper-right corner, then press the device button as prompted to confirm.
Once successfully set, remote data will appear on both the display and the App.
To cancel remote temperature & humidity display: Turn off the switch, then press the device button to save the setting. The date will replace the remote temperature & humidity data and be displayed at the bottom of the screen.
Both the display device and the device used as the remote temperature & humidity source must be added under the same SONOFF Zigbee gateway. SONOFF gateways that support the feature include: ZBBridge-P, ZBBridge-U, NSPanel Pro, iHost. The feature is also supported when connected to Home Assistant (HA).
The following SONOFF sensors can be used as a remote temperature & humidity source: SNZB-02P, SNZB-02D, SNZB-02WD, SNZB-02LD, SNZB-02DR2, SNZB-02B, SNZB-02M, SNZB-02UL.
Effective Communication Distance Verification
Install the device in the desired place, then press the Pairing button on the device. The signal icon flashes twice, indicating that the device and other devices on the same Zigbee network (the router device or hub) are in the effective communication distance.
Installation
Place on the desktop
Magnetic mounting on metal surfaces
Wall hanging
This device is intended for installation at a height of no more than 2m. Replace the Battery
Locate the battery cover latch and pry it open using a tool.
If replacing the batteries, use the same type of battery.
Factory Reset