SONOFF SNZB-02D Zigbee LCD Smart Temperature Humidity Sensor,Works with Alexa/Google Home, SONOFF ZigBee Bridge Is Required, Battery Is Included

You know how the things are looking like when you are a home automation fan? You have plenty of sensors and screens in the house but you still don't have enough. ☺️ Despite the fact that I already have in all the rooms accurate temperature/humidity sensors from Shelly - connected via Bluetooth, I noticed that there is a long way until someone (ok, my wife as always 😂) will actually read their values using the screens from the walls or phones. This encouraged me to look for some simple and nice looking screens, but also having a good quality and durability. Considering that I'm already using several other gadgets from Shelly, Zooz, Aeotec, Philips, Innr, Zipato, TpLink and Sonoff and I'm very happy with their simplicity and quality, my choice was mainly made by the price and offers that these brands were offering at the moment of buying. Therefore, I found that Sonoff came with the best balance price/quality. Connectivity was not so important as I'm using both Zigbee and Z-Wave protocols (AEOTEC for Zigbee and ZOOZ for Z-wave). I knew, therefore, that I'll have no issues connecting a SONOFF sensor to an AEOTEC zigbee module. Functionality is good, see the picture attached. This is also confirmed by the Shelly temperature/humidity sensors from the house. The screen is simple and has a nice contrast and if I have no complaints from my wife, then it worked 100%. 😎 There are two variants of attachment. On the wall using a strong magnet and on the table. What I like about them is that on the wall you can stick the magnetic part using 3M double tape already attached. That plastic part is like a pocket for the sensor, you can - if you want to move the sensor somewhere more visible or you wany to measure the temperature in a different place - you can literally take the sensor from its pocket and place it on a table. Battery type is CR2450. I bought the pack of two sensors and I had to replace the battery to one of them as it was empty, while the other one had a full battery. I had a Duracell CR2450 spare battery already so this was a simple fix for me. Not sure about the battery life overall, I'll be back here later for updates regarding this matter. But the lesson will be from this episode to have a CR2450 spare battery as you never know when you need one ;)

🌡️ The module is small, but knowing the components required for it, it’s probably no surprise. This means that you can have an unobtrusive installation, and I stuck them to the walls in discreet places. The temperature seems accurate enough, with the first readings coming out to match the other temperature and humidity sensors that I have. Equally, the humidity readings were as expected. ⚙️ The 3M double-sided foam on the back will hold this firmly to the wall. Remember to remove the piece of plastic under the battery to activate it after prying off the back. I have seen forum feedback mention that this is not easy, but it can be done with a small flat-blade screwdriver, and I have more of these sensors, so I am well used to getting the back off and on again. It's really not that difficult. 🌡️ There is a small grid on one side for airflow, so when installing, make sure that is not covered up. At the other end of the sensor is the pairing button. Pairing them was simple with Home Assistant and ZHA, though I had to pair them again after moving them to their final locations. The sensors come with a piece of sticky foam, which I used to stick them in place. One went upstairs, but I wanted the other one in the kitchen, and that took some thought. I needed to keep it away from the cooker and the kettle, other sources of artificial heat such as a radiator, and sunlight from the windows. In the end, I was successful. ⚙️ The sensors work very well, and Home Assistant tracks the history so I can see what the temperature trends are. The device also reports the battery status, and in my experience, the battery lasts a very long time. I have had one of these operating for 11 months, and the battery is still reporting 100%. ✔️

I’m using these SONOFF SNZB-02D temperature and humidity sensors alongside the SONOFF Zigbee Bridge Pro to automate tasks across my property. They’re installed in outbuildings to monitor environmental conditions, and when thresholds are reached, they trigger smart plugs and appliances such as heaters, fans, or dehumidifiers. The sensors are accurate, responsive, and integrate well with the app. Important note: these sensors require a Zigbee bridge to function as smart devices. Without one, they simply act as standalone digital gauges with no automation or remote monitoring. Once paired with the bridge, they unlock full smart functionality. Setup wasn’t flawless, which is why I’ve rated them four stars. Pairing was a bit fiddly at first, but after speaking with SONOFF support, I learned that connecting and updating the sensors close to the hub or router makes a big difference. Once I followed that advice, they paired quickly and worked reliably. The LCD display is clear and easy to read, and having both temperature and humidity data available remotely is a huge plus. Signal range varies depending on walls - in my wooden cabin, the sensor works fine at around 15 metres. In my brick garage, the signal weakens at just over 6 metres, so placement matters. Battery life initially was quite short, but after replacing with a branded battery, they seem to be lasting a lot longer. They’re not the cheapest sensors out there, but the functionality and integration make them worth it if you’re building a smart automation setup. Just follow the pairing tip and make sure you’ve got a compatible bridge.

Impeccable. Fait le taff, bonne taille et facile à intégrer. Je vais en commander plusieurs, c'est sûr.

Interessante termometrino per interni, dal costo molto modesto. E' carino da vedere: è piuttosto piccolino, ha un display grande e ben leggibile, e le temperature e l'umidità misurate sono precise. Essendo Zigbee, può essere usato come termostato. Io l'ho preso per regolare una stufetta in bagno. Ho preso una stufetta Tuya, che controllo con un pulsante e un termometro Zigbee. Oltre alla temperatura e all'umidità, trasmette anche il livello della batteria interna, che dura tantissimo.

Great Temperature /Humidity sensor. Good accuracy and integrates well into my Home Assistant automation through the zigbee integration.

Meine Rezesion bezieht sich auf die Zigbee-Temperatursensoren von SONOFF SNZB-02 2er Set (SNZB-02 2PCS). Die Inbetriebnahme ist kinderleicht. Man muss das Gehäuse zunächst öffnen (mit einem Schlitzschraubenzieher ist es nämlich wirklich einfach und sicher, und ich kann nicht nachvollziehen, wie das hier so dermaßen bemängelt wird) und die Plastikplatte unter der Knopfzellbatterie entfernen, dann ist das Gerät auch schon zur Koppelung bereit. Das Gerät wurde problemlos in zigbee2mqtt (über Sonoff Zigbee 3.0 USB Dongle) erkannt und automatisch über die Integration an Homeassistant weitergeleitet. Die Messwerte, soweit ich beurteilen kann (mit zwei anderen Thermometer von anderen Herstellern), ist präzise genug für meinen Zweck. Wir haben bereits einen Sensor in den Kühlschrank gestellt, um die Kühlungstemperatur zu überwachen. Wie man aus den Bildern sehen kann, hat das wirklich sehr gut funktioniert. Die gemessene Temperatur, gemessen im mittleren Fach, stimmt weitgehend mit der eingestellter Temperatur überein. Insgesamt machen die Temperatursensoren einen ziemlich guten Eindruck und ist für die Smart Home Integration mit Zigbee (keine Alexa und co. oder Zigbee-Hub mit proprietären Zusatzprotokollen wie Hue Bridge) und MQTT sehr gut geeignet. Integration in Alexa und so habe ich nicht probiert, da ich entsprechende Hardware nicht benutze und auch nicht benutzen möchte. Daher Empfehlung für jeden, der ein bisschen mit Smart Home auskennt. Ich bin gespannt, wie lang die Batterie hält.

Very nice