Smart | wireless temperature and humidity sensor | white | Wi-Fi | Zigbee | SONOFF | SNZB-02P

Code: SONOFF-SNZB-02P

Barcode: 6920075740622

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Price 11.50 € VAT incl.
( 9.50 € VAT excl. )

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SONOFF SNZB-02P is a wireless Zigbee 3.0 temperature and humidity sensor with low power consumption and a CR2450 battery. Works with SONOFF iHost, NSPanel Pro, ZB Bridge Pro, ZBDongle-E and other Zigbee hubs. Dimensions 43 × 43 × 14 mm.

Product description

Smart | wireless temperature and humidity sensor | white | Wi-Fi | Zigbee | SONOFF | SNZB-02P

SONOFF SNZB-02P is a wireless Zigbee 3.0 temperature and humidity sensor with low power consumption. It measures the indoor climate and sends the data via a Zigbee hub to the app and automations.

Key idea:
A small sensor that lets heating, ventilation or a dehumidifier respond to real temperature and humidity, not to a guess.

Measurements
temperature and humidity

Connectivity
Zigbee 3.0

Battery
CR2450, 3 V

Dimensions
43 × 43 × 14 mm

How it works

The sensor periodically measures air temperature and relative humidity.

Data is sent via Zigbee 3.0 to a hub – SONOFF iHost, NSPanel Pro, ZB Bridge Pro, ZBDongle-E or another compatible Zigbee hub.

The hub or eWeLink app shows readings and history, and scenes are triggered by thresholds.

Why choose SNZB-02P?
Zigbee connectivity and low power consumption let the sensor run for a long time on one battery, and the Zigbee 3.0 standard ensures wide compatibility.

Technical specifications

Product type	Wireless Zigbee 3.0 temperature and humidity sensor
Manufacturer / model	SONOFF SNZB-02P
Measured values	temperature, relative humidity
Wireless	Zigbee 3.0 (IEEE 802.15.4)
Compatible hubs	SONOFF iHost, NSPanel Pro, ZB Bridge Pro, ZBDongle-E, Alexa with built-in Zigbee hub, etc.
Power	CR2450 battery, 3 V
Housing	PC
Colour	white
Dimensions	43 × 43 × 14 mm
Use	indoor
Warranty	24 months

Main functions

Temperature measurement – indoor heat control.
Humidity measurement – mould and dryness prevention.
Zigbee 3.0 – wide hub compatibility.
Low power consumption – long battery life.
Scenes and automations – controls heating, ventilation, dehumidifiers.
History – reading trends in the app.

Where is it used?

Living rooms and bedrooms
Bathrooms and laundry rooms
Basements and storerooms
Children’s rooms
Server and technical rooms
Greenhouses and winter gardens

Use by need

For homeowners.
Climate monitoring and automatic ventilation.

For smart home integrators.
A Zigbee 3.0 sensor for automation scenes.

For facility managers.
Temperature and humidity control in technical rooms.

Practical use

If bathroom humidity exceeds 70 %, SNZB-02P triggers a hub scene that turns on the extractor fan via a smart relay and switches it off when humidity drops.

Pros

Zigbee 3.0
Temperature and humidity in one
Long battery life
Compact housing
Wide hub compatibility

Cons / limitations

Requires a Zigbee hub
Indoor use only
No display
Battery needs replacement

Safety and installation notes

Use only indoors
Protect from direct water
Observe polarity when replacing the battery
Recycle used batteries
Keep away from children – contains a battery

Quick selection guide

Temperature

Humidity

Zigbee 3.0

CR2450

43 × 43 × 14 mm

White

Suitable when you need:

monitor the indoor climate
automate ventilation or heating
control humidity in basements and bathrooms

Check before use:

whether you have a Zigbee 3.0 hub
the distance to the hub or a Zigbee router
a mounting spot out of direct sunlight
what automations you plan

Important reminder: SNZB-02P works via a Zigbee hub – without one the sensor does not connect directly to Wi-Fi.

FAQ

Is a hub needed?
Yes, a Zigbee 3.0 hub is required, e.g. SONOFF iHost, NSPanel Pro, ZB Bridge Pro or ZBDongle-E.

What battery does it use?
CR2450, 3 V.

Does it work with Home Assistant?
Yes, via a Zigbee adapter such as ZBDongle-E.

Can it be used outdoors?
No, the sensor is for indoor use.

Can it control a fan?
Yes, via a hub scene and a smart relay.

What are the dimensions?
43 × 43 × 14 mm.

Smart | wireless temperature and humidity sensor | white | Wi-Fi | Zigbee | SONOFF | SNZB-02P

SONOFF SNZB-02P is a Zigbee 3.0 temperature and humidity sensor with a CR2450 battery for climate monitoring and automations via SONOFF and other Zigbee hubs.

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.

Attributes

Manufacturer

Sonoff

CE certificate – a guarantee of safety, quality, and compliance

This product is marked with the CE label, which confirms that it complies with all applicable European Union directives and regulations. CE marking is not just a formality – it is an important indicator of quality and safety, ensuring that the product has been properly assessed, tested, and can be safely used throughout the EU market.

CE certification means that the product has been evaluated according to the main criteria:

Safety requirements – ensures that the product does not pose a risk to the user or the environment
Electromagnetic compatibility (EMC) – the device does not interfere with other equipment and is resistant to external disturbances
Environmental standards – complies with current ecological and material usage requirements
Operational reliability – the product is suitable for long-term use according to its intended purpose

CE marking allows this product to:

be legally supplied and used in all European Union countries
ensure a high level of quality and safety
be used in residential, commercial, and industrial environments

The CE mark is a declaration of the manufacturer’s responsibility, confirming that the product complies with all applicable standards and has been assessed according to EU legislation.

What does this mean for you as a buyer?

Safe use in everyday activities
Reliable performance and reduced risk of failure
Compliance with EU standards and requirements
Suitability for professional solutions

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