SwitchBot WiFi Thermometer Hygrometer 3 Pack with Hub Mini, IP65 Indoor Outdoor Thermometer Wireless, Humidity/Temperature/Dewpoint/VPD/Absolute Humidity Sensor with Smart Alerts, Works with Alexa

I have tried a couple of brands of smart thermometers (Aqara and SensorPush) and I found these Switchbot sensors to be the best bang for the buck vs those other brands. The Aqara sensors kept randomly dropping their connection and the Aqara app was not very well polished. The SensorPush sensor and app work great, but they cost a lot more and do not sync with the Apple home app.The Switchbot sensors are easy to setup, and so far the connectivity has been 100% reliable for me (two months in) and the temperature readings seem accurate. They typically match almost perfectly with the temperature on my SensorPush sensor . The Switchbot app takes a little getting used to at first, but once you have it down it is a very data-rich and intuitive interface that I have really enjoyed using (especially over the clunky Aqara app). I use the Switchbot app to look at detailed temperature data, but I also have it synced up to Apple Home via the Switchbot Hub 2 so I can see the current temperature in the Home app. I do wish the Home app showed me the temperature history, but I don't mind using the Switchbot app for that instead. If you are a fan of the Apple Home app to control your smart home I think these temperature sensors are the best ones you can get!The temperature sensors and Hub 2 are the only Switchbot products I currently have, but based on my experience thus far I am sure they will not be the last Switchbot products that I purchase. I already plan to get more temperature sensors in the future. I highly recommend these!

I purchased this to track the temperature in a portable cooler while multi-day camping in 80+F weather. I'm using a Bodega battery powered cooler that reports its temperature on its control panel. Since the cooler's temperature sensor must be inside a cooler wall, I wanted to know what temperature the food at the top middle of the cooler was maintaining while camping.In testing the SwitchBot at the bottom of the cooler, its measured temperature agreed with the cooler's measurement after a long equilibration period of 1hr as the thermometer adjusted from 79F to 32F. The cool down time was measured from data recorded in the SwitchBot app. Overnight measurements averaged 32F in a range from 30-34F in perfect agreement with my expectation and the 32F set on the Bodega cooler.The SwitchBot app has a logging function for tracking temperature changes. The thermometer stores measurements until the app connects and downloads the stored data. It is not necessary stay connected to the bluetooth to track recent temperature history. I'm not sure how long 'recent' is but it seems long enough for my purposes.Overall, the app works well on my iPhone. It connects to BLE quickly and provides displays of up to 31 days. I am satisfied with the purchase for my use.The SwitchBot thermometer also agrees well with two other trusted thermometers at 78F without calibration. When I initially received the thermometer, I thought that the thermometer required calibration of up to 4-6F after a 30 min wait both at room temperature and with the suggested 30 min time. I left it overnight and the next morning noticed that I needed to eliminate that calibration to match my other thermometers. An equilibration time of 30 minutes might be appropriate for small changes in temperature, but a much longer equilibration is required for large changes. My thermometer does not require calibration.

Updating review to 4-stars 1 July25 because customer service was very helpful and resolved my problem. Initial feedback remains below, but customer service reached out and listened to my issue. They sent a replacement device without any push back and all is working fine again. Thank you SwitchBot.2-stars: Bought this for hiking/camping to track weather stats. Worked great for about 1year then stopped syncing with my iPhone. No longer discoverable. Recent update to SwitchBot app now requires a WiFi/internet connection so it is impossible to use in backcountry. Very disappointed.

These feel really great, especially for the price.The packaging is very well thought out, pull tabs everywhere you need them, etc. The actual build quality also seems fine, the shells feel robust and the battery cover has a gasket to keep moisture at bay. Batteries are included and pre-installed, just pull the little tab to turn it on.Functionality wise, Home Assistant will pick these up without any additional work as long as you have bluetooth enabled, so no need for hubs or apps.They expose three sensors, temperature, humidity, and battery. The listing shows stuff like dew point and VPD but these are just calculated, there's no special sauce on the device itself. The update rate is 4s, but the device has a decent amount of thermal mass so the measurements are slow to react to fast changes. This is normal for this class of sensor, but noting it in case someone wanted to use it for more precise stuff. I threw a sensor in my refrigerator and it dropped at around 10F/5m, to give you a sense of the reaction time.