WiFi Hygrometer Thermometer 6 Pack H5100, Indoor Wireless Temperature Humidity Sensor Monitor with Remote App Notification Alert, 2 Years Data Storage Export, for Home, Greenhouse

These use a single AAA battery, and depending on the location of the hub and the AAA battery used, they last a long time! The setup was easy using the app, and I do have it connected to Govee's cloud so I can access the Hygrometer Thermometer information when out of the house. The hub found the devices without issue, and I was able to add them. I like the Bluetooth feature, as these can be used without a hub, though using a hub is better for the longevity of batteries and WiFi access. I wish the hub included with this pack could have more than 10 devices connected to it, as I'd like to place more Hygrometer Themometers than just 10 of them. Another downside to the hub is that it will ONLY work with HS100s. I have one HS100 outside, then others inside the house in the Kitchen, living room, dining room, Bedroom, and Server Room (aka Spare Bedroom). I have alerts set for temperature and humidity for the server room, as my servers and network gear care a bit more about both! And I occasionally get alerts for both. As for accuracy, the Dining Room HS100 temperature matches very closely to the Thermostat that is in the same room, even though the Thermostat only does full F degrees and not partial. As for battery life, I am using Panasonic Eneloop and EBL AAA batteries. I have noticed that the EBL AAAs drain faster than Eneloop AAAs, so they need to be replaced more often and recharged. I placed one of the HS100s in my fridge, and the battery did not last long, maybe a month if I was lucky. So get the Govee Hygrometer Thermometer that requires three batteries if you want these in a fridge or Freezer. These were my first Govee devices, but I have now bought some light bulbs. I have found that Govee devices I purchased are very good quality, and I will buy more Govee devices, including more HS100s.

Easy setup, can trend data over time. Just got ever thing setup for wi - fi. Sensors are small about a tenth the size of other brand sensors. Tested remote access outside of home a mile away. Everything works! Nice feature is that you can calibrate each sensor for maximum accuracy to a known source. Cannot do this with common temp/humidity sensors. So you can get all the sensors reading the same. Using this as a remote system when I am away from home. Live at 7,000 ft and it can get cold in a hurry. I have a couple of weather systems and this was easiest to setup for remote monitoring. Data trending is great over a day, week, and month. Gave it 5 stars for easy setup, will see about reliability. Only gripe is you need a magnifying glass to read the manual. UPDATE 1 - Well it has been a week now. Spent a few days in Phoenix away from Flagstaff. Readings are reliable. Still 5 stars. UPDATE 2 - Well I added a second set of sensors and gateway. Now controlling 6 temp/humidity sensors. Called customer service which is a miracle as there a phone number; to see if a second gateway can be added. No problem it can.

I use these to monitor temperature and humidity in my leopard gecko enclosure and they work great and seem accurate. The WiFi connection is awesome because I can check readings anywhere, not just when I’m home. I also like that you can pair them with Govee plugs to automate other devices (like running a humidifier when humidity gets too low or shutting it off when it’s high). I liked them so much I bought more Govee sensors for other areas too, like tracking humidity in my plant room. Tons of uses for these.

I bought four of these in order to better monitor the interior temperatures of my multi story home. The interface with my iPhone was pretty easy and with the exception of having to change batteries every so many months the system works flawlessly. It provides room temp at any time plus various reports on humidity, temp fluctuation history etc. It's not going to predict the weather for you but its a decent product and I'm finding them very helpful. FYI I use these since I installed, in addition to my boiler, mini splits for air conditioning and heat. They allow me to keep an eye on all aspects of my homes temperature.