SwitchBotIP65 Indoor Outdoor Hygrometer Thermometer Wireless 3Packs, 394ft Bluetooth Range, Refrigerator Thermometer, Dewpoint/VPD/Absolute Humidity Sensor, 2-Year Battery Life, Free Data Storage

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.

I found the Bluetooth sensors to be surprisingly accurate. I live out in the sticks in the woods and any weather app is off by at least 5 degrees if not more. I set these up on my deck, just outside in the trees, and in my loft bedroom. No problems connecting locally. I then got a Switchbot mini hub and I can access them remotely anywhere. The hub also lets me configure any IR remote to work with it as well remotely or from the couch. My house is going smart.

It seem to be a good sensor! It is quite accurate. I haven't had it long term to judge its true quality. I don't like battery powered devices that eat batteries like a starving dog.