Review on 5-Pack of Kinyanco Mini Hygrometer Thermometers with Digital LCD Display for Tracking Indoor Temperature and Humidity in Home Office, Humidifiers, Humidors, Car, Greenhouse, Baby Room... by Pedro Hague

Received today. In fact, they were all almost identical in RH and temp to begin with. After being put on the table for several hours, they are now all at the same relative humidity and within 1 degree Fahrenheit of each other. You are already loaded. Going from C to F is kind of clever. You have to use a metal object to short out the circuit you can see through the hole on the back and then as soon as it changes, quickly pull out the metal object and hope the F stays. Some took a few tries, but it's doable. For the price they are absolutely worth the money. If they start dying I'll report it, but I suspect they'll last long enough for my purposes. I bought these round ones instead of the rectangular ones because they would be a lot easier to install with a simple hole saw.