Geevon Bluetooth Thermometer Hygrometer, Indoor Temperature Humidity Sensor with HD Display, App Notification Alert, Historical Data Storage and Export(4 Pack )

I like that it has a little face on there to tell you the if the humidity range is good or not( it smiles or frowns) so you don't have to look up the ideal range constantly. The bluetooth range is about 33 feet for me(which is pretty normal I think)The accuracy is almost the exact same as the thermostat on my wall. I like that it came with a tool to open the back for the battery(battery is included )but it was kind of weird that the tool they give you is made from PCB(basically a computer motherboard). All in all these were pretty good and easy to set up.

best devices to give me peace of mind on monitoring my extensive doll collection,I highly recommend them.

I grow orchids so temperature control is a must. I also need to monitor humidity. These do the trick perfectly.

Awesome product easy to use

I love these things. Keep me from worrying !

works Great insidè and outside !!!!

Horrible range. App wants tons of info. Popup everytime you try to log in until you give it.

every sensor had a dead battery

These don't connect to your home network. Only to your phone's bluetooth, and worse than any other bluetooth device I've ever used. You have to be in the room with the device to get it to connect, then it takes longer to open the app and get it connected than it would to just go look at it.

This is close to being a scam. If you wish to receive notifications from device as described, they what you to sign up for a service plan starting for $49 per month to $120.