If you have a need to wirelessly monitor the temperature or humidity of a room, attic or even a crawl space, the Govee Thermometer Hygrometer is a great device! I currently have 3 of them monitoring my attic, crawl space, and kid’s room. They have a nice screen but also sync over Bluetooth with your smartphone. They take 2 AAA batteries after a couple of months still are showing full for the battery status.
They are great for real-time temperature and humidity readings but also store 20-day historical data that can be viewed and exported from the app. You can also set high/low alarms for both temperature and humidity but since they are Bluetooth, you do have to be within 100 ft of the device to get an alert.
For $15, the Govee is a great deal and I highly recommend them!
