SNZB-02WD: Indoor/outdoor Zigbee IP65 temperature and humidity sensor

SNZB-02WD is the new Zigbee temperature and humidity sensor from Sonoff and can be used both indoors and in the garden thanks to its IP65 protection rating, making it very practical for a variety of applications.

Why does Sonoff SNZB-02WD have this price?

Sonoff offers an IP65 temperature and humidity sensor with Zigbee technology at an attractive price, as is usual with this company.

Advantages and Disadvantages of the Sonoff temperature sensor

Sonoff SNZB-02WD sensor usage tutorial

Today we are going to discover this new success in the smart home market.

General characteristics of Sonoff SNZB-02WD

If we open the packaging, we discover the Sonoff temperature and humidity sensor, which is white and measures 62.8×58.5×21.8 mm.

In addition, we have an instruction manual.

A pairing pin.

A lanyard for easy hanging and installation.

It also incorporates a magnet which allows it to be installed on metal surfaces such as a refrigerator.

Or a piece of furniture and this sensor can be moved at any time.

This temperature sensor incorporates a 2.2-inch LCD display that allows you to read the temperature and humidity measured in real time, its battery level and connectivity indicator.

On the back, we have the battery holder and this CR2477 battery is included with a battery life of 2 years according to the manufacturer.

This device integrates a silicone ring at the end of the thread ensuring a perfect seal at the back of the device and thus preventing water and dust penetration.

And the manufacturer indicates that this sensor has an IP65 degree of protection.

So you can use this sensor anywhere in your home or garden in both summer and winter and in extreme conditions knowing that it can operate and measure temperatures from -20°C to +60°C with an accuracy of +/- 0.2°C and it is UV resistant, which guarantees its durability even in direct sunlight.

And at relative humidity level, it can measure values between 0 and 100% with an accuracy of +/- 2%.

Therefore, we can use it in multiple areas such as our living room, kitchen, wine cellar, bathroom, garage, laundry room, technical wardrobes, garden and much more.

And there is a black button for changing the unit of measurement (from °C to F or the other way round) and for pairing.

This SNZB-02WD sensor integrates Zigbee technology so you will be able to use it with a Sonoff Zigbee hub.

Or with universal hubs like Jeedom and Home Assistant with ZHA or Zigbee2Mqtt.

How to link the Sonoff sensor SNZB-02WD

To pair the Sonoff SNZB-02WD sensor, you must put your home automation hub in pairing mode.

At this point, you must remove the battery protection and the sensor should automatically join the Zigbee network of your home automation hub. If this is not the case, you can press the physical button inside the sensor for at least 5 seconds.

A wave icon should flash.

Ready, after a few seconds, you should see your sensor available in the interface of your home automation hub so now, you will be able to follow the measured temperature and humidity from anywhere in the world.

How to install the Sonoff SNZB-02WD sensor

To install this sensor, as I mentioned, you can put it on a metal surface as it has an integrated magnet.

Or hang it up with its included cord.

The interesting thing about this sensor is that in addition to sending its temperature and humidity measurements to a compatible Zigbee hub, you can also read them directly on its display.

And unlike other sensors that cannot withstand extreme temperatures, this Sonoff sensor can even be placed inside the refrigerator, as it operates at temperatures as low as -20 °C.

Detailed functions of SNZB 02WD

Let’s take a look at the different functions available with this Sonoff SNZB-02WD sensor.

To begin with, “Battery” is the battery level in percentage, which is interesting to know when we should replace this battery.

“Voltage” is the battery voltage reported in mV.

“Temperature” is the real-time temperature measurement of the sensor.

“Humidity” is the humidity measured by the sensor in real time.

Of course, from your home automation hub interface you will be able to see a history of all these sensor measurements over time and Sonoff indicates that its sensor has a fast 5-second refresh rate.

“Temperature units” allows you to switch between °C or F temperature units.

“Temperature calibration” allows you to modify the measured temperature in case you find that you have an inaccurate sensor measurement.

“Humidity calibration” allows you to modify the measured humidity level in case you find that you have an inaccurate measurement from the sensor.

And “Link quality” is the quality of the communications of this sensor with your home automation hub.

We have already seen in detail how to analyse and improve this Zigbee link quality and to summarise, if you have this sensor installed far away from the home automation hub, you can additionally add sockets, modules, light bulbs and any other Zigbee device to automatically improve this range.

And of course, thanks to this sensor, you will be able to create different automations such as receiving alerts in case of temperature or humidity level below or above a defined level.

You can also manage your heating.

Or ventilation and other actions according to these temperature and humidity measurements.

Your imagination is your limit.

In short, this temperature and humidity sensor is unique in that it has a screen to read the measurements in real time and from your phone thanks to a compatible Zigbee hub and its IP65 protection rating allows you to measure temperatures and humidity levels in any environment.

And as in many occasions, Sonoff offers a competitive price as this sensor is available for 21.99 euros.

Generally purchased together

Buy now your Sonoff IP65 Temperature Sensor