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SONOFF Zigbee Smart Temperature and Humidity Sensor SNZB-02M

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SONOFF Zigbee Smart Temperature and Humidity Sensor SNZB-02M

€40,96
€40,96
SONOFF Zigbee Smart Temperature and Humidity Sensor SNZB-02M For monitoring the home environment Requires a ZigBee control center No WiFi connection Suitable for those who...
Vendor: Sonoff
Availability: In stock , 3 dni Out of stock

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SONOFF Zigbee Smart Temperature and Humidity Sensor SNZB-02MSONOFF Zigbee Smart Temperature and Humidity Sensor SNZB-02MSONOFF Zigbee Smart Temperature and Humidity Sensor SNZB-02MSONOFF Zigbee Smart Temperature and Humidity Sensor SNZB-02M

SONOFF Zigbee Smart Temperature and Humidity Sensor SNZB-02M

For monitoring the home environment Requires a ZigBee control center No WiFi connection

Suitable for those who want to accurately monitor the temperature and humidity in a selected room in a smart home via the ZigBee system.

  • It helps maintain a pleasant climate in the room.
  • Allows integration into automated smart home scenarios.
  • Guaranteed local connection without burdening the WiFi network.
  • The compact design allows for discreet installation.


SONOFF SNZB-02M AirGuard TH Pressure is a compact smart environmental sensor that monitors temperature, relative humidity and air pressure. Based on the measured data, the application also calculates Dew Point and VPD , thus providing a more comprehensive overview of room conditions.

The sensor uses Zigbee 3.0 , which ensures low power consumption and reliable connection to compatible Zigbee gateways. The measured data can also be used for smart automation, for example, to automatically turn on a fan, dehumidifier, heating or other compatible devices.

SNZB-02M allows you to set the desired range of temperature, humidity and air pressure. When an individual value exceeds the set limit, the user can receive a warning via the application.

High-precision sensors allow temperature measurement with an accuracy of ±0.2 °C , relative humidity with an accuracy of ±2% RH and air pressure with an accuracy of ±0.1 hPa .

Powered by a CR2477 battery, which, according to the manufacturer, provides more than two years of operation. The wireless and compact design allows for flexible placement practically anywhere indoors.

Main advantages:

  • temperature measurement
  • relative humidity measurement
  • air pressure measurement
  • dew point calculation
  • calculation of VPD
  • Zigbee 3.0 connectivity
  • high measurement accuracy
  • warnings when set values are exceeded
  • possibility of smart automation
  • history of environmental data
  • more than 2 years of expected battery life
  • compact wireless design
  • suitable for indoor use

Technical specifications:

  • Model: SNZB-02M
  • Product name: AirGuard TH Pressure
  • Type: Zigbee temperature, humidity and air pressure sensor
  • Wireless connection: Zigbee 3.0, IEEE 802.15.4
  • Power supply: 3V DC
  • Battery: CR2477
  • Operating temperature range: -20°C to 60°C
  • Operating humidity range: 5-95% RH, non-condensing
  • Air pressure range: 700–1100 hPa
  • Temperature accuracy: ±0.2 °C
  • Humidity accuracy: ±2% RH
  • Air pressure accuracy: ±0.1 hPa
  • Housing material: PC
  • Dimensions: 45 × 45 × 17.6 mm
  • Weight with battery: 27.3 g


It is important to know

Before purchasing the SONOFF Zigbee Smart Temperature and Humidity Sensor SNZB-02M, it is crucial to consider whether your smart home already includes a Zigbee hub, as this sensor works exclusively in conjunction with such a device. In addition, it is worth taking the time to plan the installation location - the right location significantly affects the accuracy and usefulness of the data you obtain.

  • A Zigbee hub is required for operation - this sensor does not work independently and cannot be directly connected to a WiFi network or phone.
  • When your smart home already has a Zigbee hub, it allows for stable operation and connection to multiple sensors in the system without placing a heavy load on the WiFi network.
  • It is advisable to carefully plan the installation and data acquisition according to the microclimate of the room, as too quick or superficial installation can reduce the accuracy of measurements.
  • If you want to use the sensors in several different locations (e.g. multiple rooms, weekend), it is recommended to first check the range of the Zigbee network based on the characteristics of the room.

Source of editorial recommendations: general verifiable guidelines for product selection.

In practice

🟢 Monitoring temperature and humidity in living spaces

This sensor is very suitable for basic climate monitoring in your home if you have a Zigbee hub - you will receive data reliably and you can automate other devices based on the measurements.

🟡 Smart automation in larger homes

The sensor supports greater coverage in conjunction with the control panel, but you should keep in mind that the range of the Zigbee network may limit installation in larger or multi-level apartments without additional signal extension devices.

🔴 Direct remote control without a central station

This model is not suitable for direct use without a Zigbee control panel and does not support WiFi connection, so it does not allow remote control or data reception without a properly established infrastructure.

Answers to frequently asked questions

Does SONOFF SNZB-02M work without a Zigbee hub?

No, a Zigbee hub or control panel is required for connection and operation.

Can the sensor be connected to a WiFi network?

No, this model exclusively supports communication via the Zigbee protocol.

How accurate is the measured data?

The accuracy of the data depends on proper installation in a neutral location in a room where it is not exposed to direct light or humidity.

Can one Zigbee hub support multiple such sensors?

Yes, most Zigbee control panels allow you to connect and monitor multiple sensors simultaneously, but the total number depends on the specific control panel.

Description updated: September 2026

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