Review on JEDEW Mini Hygrometer Thermometer - Accurate LCD Monitor for Indoor/Outdoor Humidity & Temperature Measurement - Ideal for Humidifiers, Dehumidifiers, Greenhouse, Reptile Environments, Plants & More by Carlito Tardy

Edited to update: I'm adding and removing other stars. After a month of use, 3 stopped working. New batteries, no repair, they're just dead. The last one will NOT stay at F and keep coming back to C so I know it won't be long. It was a waste of my money and now I'm back hunting, saving your money and looking elsewhere. I thought these 4 packs would be the perfect addition to my daily checks on my reptile enclosures. boy was I wrong. After testing and running several trials with this package, I found that they are NOT remotely accurate. All 4 give you different temperature and humidity readings, and even "resetting" doesn't help. They give a rough idea of range but should by no means be the only thing to check as they will vary by more than 5 degrees.