IP65 Indoor Outdoor Hygrometer Thermometer Wireless 3Packs, 100m Bluetooth Range, Refrigerator Thermometer, Dewpoint/VPD/Absolute Humidity Sensor, 2-Year Battery Life, Free Data Storage

I’ve used these temperature and humidity sensors in my beehives to assess colony wellbeing during colder seasons and improve their chances of over wintering Their size fits the crown board cutouts and are shallow enough to fit under the roof The app is simple to setup and connect to the sensors and downloads of data work without any issues Data graphs show daily patterns and can be switched to weekly or monthly for comparison Very good value for money and included AAA batteries should last 2 years before needing replacement

While these are larger than some other temperature/humidity sensors it means that the batteries will need replacing far less frequently than devices that use coin cells and rechargable AAAs can also be used. The IP65 rating means that they can stand a bit of moisture and can be used outdoors or in a kitchen freezer but they are not fully waterproof so don't put them in your fish tank for example. They transmit readings via BLE advertisement every couple of seconds and I have one in the shed at the bottom of the garden and can pick up its signals from the lounge which is well over 25m away with a couple of brick walls between them. The SwitchBot app can talk to them directly over Bluetooth/BLE or you can use any of SwitchBot's BLE/WiFi hub-capable devices to connect them to your SwitchBot account and access them from anywhere. From a Home Assistant server equipped with a Bluetooth radio, the local SwitchBot BLE integration also works well and you can use an ESPHome-based BLE/WiFi bridge node with the SwitchBot integration if the server is out of BLE range. Alternatively, the author of the Smart Home Scene web site has reverse-engineered the BLE announcements allowing you to use an ESPHome (or other tinkerer platform) device to expose the sensors directly to Home Assistant or whatever system you use. The sensor is pretty accurate out of the box but you can use the app to calibrate the temperature readings using an ice bath and SwitchBot provide step-by-step instructions for doing this.

For me, this is a 5* product. I’ll get into why after I explain the 4*. One of the indoor / outdoor sensors in my pack of three unfortunately failed its firmware update out of the box and became bricked. Thankfully, support have been amazing and sending me a replacement. The process was little hassle. That being said, I feel out of principle I cannot give a 5* right now. The product itself is brilliant. Compact (actually smaller than I was expecting), which makes it unobtrusive and good to put in tighter spots or even inside things (a terrarium for example). Connectivity is excellent. No hub or even an app are needed for this, you can hook it straight into home assistant over bluetooth. However, the switchbot app is great and has a lot of useful functionality. One of my favourite things about this is that you can just use it or take it with you anywhere and check temp and humidity on your phone. I’m a bit of a data nerd so i’ve taken it to all sorts of different places in the short time i’ve had it. Accuracy is hard to gauge without a benchmark I know is 100%, which i don’t have. But I believe they are very accurate, and did my research before hand to make sure they would be. Having a number of these sensors, they seem to agree strongly with one another. Which is reassuring. The one thing I will mention, is that their time to adapt to a drastic change in temperature +-20 celsius is quite long. Perhaps 20 mins or maybe a bit more. This is no issue, as the accuracy is stellar. But for some others this may be a concern. Overall, i’d highly recommend these.

I have been using these as thermometers in a campervan fridge to monitor the temperatures as there was no gauge on the fridge. They were very easy to install using the velcro strips provided and the app has been very useful in accessing the data without having to open the fridge up to take readings. I'm now using the sensors through a Raspberry Pi using Home Assistant and they have been very reliable and it means I can read the data from anywhere (I think you can do similar with the switchbot hub but I had the RPi sitting around!). Overall I have been very impressed the build quality is very good and the temperature readings seem accurate when testing in a domestic fridge as comparison.

Accurate, weatherproof, and easy to use. It delivers precise temperature and humidity readings with long battery life. IP65 design makes it reliable in rain or snow, and with the SwitchBot Hub you get smart alerts and cloud storage. Perfect for gardens, patios, or greenhouses.

Good quality, easy to set-up, you do need to create an account for the SwitchBot app. I keep mine in the garden, it is waterproof. My advice is to get the deal with the hub as otherwise you are relying only on Bluetooth. With the hub you can see the logs via WiFi from anywhere in the world which is faster and more reliable.

Worked well but completely died after a year and a half, don't think it could withstand torrential rain. Also the signal range is certainly not 100 metres and battery life is more like 6 or 7 months.

These sensors are excellent and maintain a strong reliable connection to my switchbot hub mini situated 25m away. Accurate monitor for both temperature and humidity. Very easy to set-up using the switchbot app. Highly recommended.

Allt verkar smidigt och fungerar som det ska!

Używam czujników od dwóch lat i mogę jasno stwierdzić, że to świetne gadżety, działają bezproblemowo i do tej pory nie wymieniłem baterii ani razu. Leżą na zewnątrz i wewnątrz lodówki, zapewniając mi stały, wyraźny obraz temperatury i poziomu wilgotności. Pomiar jest precyzyjny i niezawodny. Polecam te produkty.

Returned. Bluetooth range not working for greenhouse location.

De thermometers zijn mooi afgewerkt en niet groot. Het batterijdeksel is afgewerkt met een rubber dichting. Werkt op 1 AAA batterij (meegeleverd). De app is handig en een mooi overzicht van meerdere weken. Verbinding is via bluetooth rechtstreeks in de app of via een Relais (apart aan te kopen) via wifi. Ik kocht een 3 pack zonder display en ben er heel tevreden over.

Voici quelques semaines que je l'ai installée sans problème. Il fait parfaitement son job, facile à utiliser.