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  • New item   Wireless temperature and humidity sensor | white | ZigBee | SONOFF | SNZB-02

    Wireless temperature and humidity sensor | white | ZigBee | SONOFF | SNZB-02

    Code: SONOFF-SNZB-02
    Barcode: 6920075776102
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    Price 9.70 € VAT incl.
    ( 8.02 € VAT excl. )
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    SONOFF SNZB-02 is a compact wireless Zigbee temperature and humidity sensor (43 × 43 × 14 mm). Data is visible in the eWeLink app and is used for heating, ventilation and dehumidification scenes. Zigbee hub required, CR2450 battery.

  • Product description

    Wireless temperature and humidity sensor | white | ZigBee | SONOFF | SNZB-02

    SONOFF SNZB-02 is a compact wireless Zigbee temperature and humidity sensor. It measures the room climate and sends the data to a Zigbee hub, where it is used in heating, ventilation and humidification scenes.

    Key idea:
    A small sensor without a display that can be hidden almost anywhere: in a wardrobe, storage room or behind furniture. Data is visible in the app, and automations run via the hub.
    Measurement
    temperature and humidity
    Connectivity
    Zigbee 3.0
    Power
    CR2450, 3 V
    Dimensions
    43 × 43 × 14 mm

    How it works

    The sensor periodically measures air temperature and relative humidity and sends the values to the hub over the Zigbee network.

    The hub (ZBBridge-P, NSPanel Pro, iHost or a Zigbee adapter with Home Assistant) stores the history and controls other devices based on set limits.

    The sensor runs on a CR2450 battery and is mounted with adhesive tape or simply placed on a surface.

    Why choose SNZB-02?
    The compact housing and Zigbee connectivity make it affordable to monitor the climate in several rooms without frequent battery changes.

    Technical specifications

    Product type Wireless Zigbee temperature and humidity sensor
    Manufacturer / model SONOFF SNZB-02
    Measured parameters temperature, relative humidity
    Wireless Zigbee (IEEE 802.15.4)
    Required hub ZBBridge-P, NSPanel Pro, iHost or Zigbee adapter
    Power 3 V CR2450 battery
    Apps and integrations eWeLink, Home Assistant (ZHA, Zigbee2MQTT)
    Housing PC, white
    Dimensions 43 × 43 × 14 mm
    Use indoors

    Main functions

    • Temperature and humidity measurement – real-time data in the app.
    • Data history – charts via the hub.
    • Threshold scenes – switch on heating, ventilation or a humidifier.
    • Notifications – about too high or too low temperature and humidity.
    • Compact mounting – adhesive tape or free-standing.
    • Home Assistant support – ZHA and Zigbee2MQTT.

    Where is it used?

    • Bedrooms and children's rooms
    • Bathrooms and laundry rooms (in a dry spot)
    • Storage rooms and wardrobes
    • Basements and garages
    • Server rooms and technical cabinets
    • Offices

    Use by need

    For homeowners.
    You see the temperature and humidity of each room on the phone, and heating or ventilation switches on automatically.
    For electricians.
    A wireless sensor for measuring temperature without running cables.
    For smart home integrators.
    An affordable Zigbee sensor for multiple zones and Home Assistant automations.

    Practical use

    If moisture builds up in a walk-in wardrobe, SNZB-02 is mounted on a shelf, paired with ZBBridge-P, and when humidity exceeds 65 % a scene switches on a dehumidifier via an S26R2ZB plug.

    Pros

    • Compact housing
    • Measures temperature and humidity
    • Zigbee – long battery life
    • Works with Home Assistant
    • Affordable

    Cons / limitations

    • Zigbee hub required
    • No display
    • Indoor use only
    • Not designed for direct exposure to water

    Safety and installation notes

    • Use indoors and protect from water and condensation
    • Do not install near heat sources or in direct sunlight
    • Observe polarity when replacing the battery
    • Recycle used batteries
    • Keep away from children – contains small parts and a battery

    Quick selection guide

    Temperature and humidity
    Zigbee
    CR2450 battery
    43 × 43 mm
    Hub required
    Indoor
    Suitable when you need:
    • monitor the climate in several rooms
    • automate heating, ventilation or dehumidification
    • get notifications about temperature or humidity limits
    Check before use:
    • whether you have a Zigbee hub
    • a mounting spot away from heat sources
    • the distance to the hub or a repeater
    • whether you need a display (then SNZB-02D)
    Important reminder: SNZB-02 measures ambient conditions but does not replace protective thermostats or safety devices of heating equipment.

    FAQ

    Is a hub needed?
    Yes, SNZB-02 works via a Zigbee hub: ZBBridge-P, NSPanel Pro, iHost or a Zigbee adapter.
    Does it have a display?
    No, if you need a display choose SNZB-02D.
    What battery does it use?
    A 3 V CR2450 battery.
    Does it work with Home Assistant?
    Yes, via ZHA or Zigbee2MQTT.
    Can it be used in a bathroom?
    Yes, in a dry spot without water splashes.
    Can it be used outdoors?
    No, for outdoors choose SNZB-02WD with IP65.

    Wireless temperature and humidity sensor | white | ZigBee | SONOFF | SNZB-02

    SONOFF SNZB-02 is a compact wireless Zigbee temperature and humidity sensor: data in the app, scenes for heating and ventilation, CR2450 battery, works with SONOFF hubs and Home Assistant.

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.

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