Product Overview
Introduction
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Product Name |
Zigbee LCD Smart Temperature Humidity Sensor |
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Product Model |
SONOFF Zigbee LCD Smart Temperature Humidity Sensor SNZB-02D is a Zigbee smart temperature and humidity sensor, equipped with an LCD high-definition display that displays temperature and humidity data in real-time, which is intuitive and easy to read. Paired with a Zigbee gateway, you can monitor temperature and humidity changes in real-time through the APP, store and export historical data, push notifications, voice inquiries, and link with other devices to achieve your home automation.
Highlights
- Remote Real-Time Monitoring
Monitor temperature and humidity in real time via the app or directly on the built-in display—remotely and reliably with coverage up to 120m/400ft (open space). - High Accuracy & 5s Refresh Rate
Equipped with a Swiss-made sensor for precise measurements: ±0.2°C / ±0.4°F temperature accuracy and ±2% RH humidity accuracy. Data updates every 5 seconds for timely insights. - Large LCD Display
Features a clear, easy-to-read LCD screen that dynamically shows real-time temperature and humidity. Intuitive icons also indicate room conditions and battery status at a glance. - Instant App Alerts
Receive push notifications on your phone when temperature or humidity levels go beyond your preset comfort range. - Data Logging & Export
Includes up to 6 months of free cloud storage. View hourly trends, check historical highs and lows, and export data in file format for further analysis.
Applications
- Bedroom/Living Room: Monitor ambient temperature and humidity for daily comfort.
- Greenhouse: Ensure a 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 |
CR2450 |
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Wireless connection |
Zigbee 3.0 (IEEE802.15.4) |
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LCD dimension |
2.8" |
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Net weight |
69.5g |
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Color |
White |
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Product dimension |
59.5x62.5x18.5mm |
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Casing material |
PC+LCD |
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Applicable place |
Indoor |
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Working temperature |
-9.9℃~60℃/14℉~140℉ |
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Temperature tolerance |
±0.2℃/±0.4℉ |
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Working humidity |
5-95%RH, non-condensing |
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Humidity tolerance |
±2%RH |
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Working height |
Less than 2000m |
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Certification |
CE/FCC/ISED/RoHS |
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Executive standard |
EN IEC62368 |
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 |
√ |
√ |
√ |
√ |
× |
× |
|
OTA |
× |
√ |
√ |
√ |
× |
× |
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Scene |
√ |
√ |
√ |
√ |
√ |
√ |
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Notice:
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Installation and Configuration Guide
① Signal icon
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Signal icon |
Description |
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Flashes slowly |
Device is in pairing mode |
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Keeps on |
Pairing successfully. |
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Keeps off |
Pairing failed |
② Display screen
③ Battery
④ Stand
⑤ Button
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Button |
Description |
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Press & hold 5 seconds |
Device enters the pairing mode (Pairing time 180s) |
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Click, Double-Click, Long Press |
Device wake-up/Reconnection |
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Double-press |
Switch temperature unit ℃/℉ (Factory default is ℃) |
⑥ Base
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 pairing 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
1. Place on the desktop
2. Install with base
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FAQ
- What does minimum resolution mean? What is the minimum resolution of the SNZB-02D?
The smallest measurable change that causes the displayed value on the SNZB-02D to update. Simply put, it refers to how many decimal places the screen data is precise to.
- Minimum resolution of SNZB-02D:
- Temperature: 0.1°C / 0.1°F
- Humidity: 0.1% RH
- What do the different icons represent?
|
Temp. |
Humi. |
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Hot (≥ 27°C) |
≤40％RH |
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Cold (≤ 19°C) |
≥60％RH |
- Why is the data on the device screen different from what's shown in the app?
This could be due to a network delay, preventing the app from displaying the most recent data. Alternatively, if the temperature hasn't exceeded the reporting threshold, the app may not have refreshed with the latest data yet.
- Does it support use on open-source platforms?
Yes. For example, with Home Assistant, you can pair the device using ZBDongle-P or ZBDongle-E, add it via ZHA or Zigbee2MQTT (Z2M), and monitor button events or battery status directly within Home Assistant.
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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Skadis SONOFF Temperature Sensor Holder Display (From Enthusiast) |
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Easily mount your Sonoff SNZB-02D sensor on the IKEA Skadis board. You will need the magnetic support provided by the sensor. Just attach it to the printed part using the double-sided tape provided (pay attention to the direction). You now have a magnetic support attached to your Skadis board!
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Access Link: Skadis SONOFF Temperature Sensor Holder Display |
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Know more
For a detailed guide and review of the SONOFF SNZB-02D, visit our free course at the SONOFF Academy.