2-Pack Mini Digital Hygrometer Gauge Indoor Thermometer LCD Monitor Temperature Outdoor Humidity Meter for Humidors Greenhouse Cigar Jars Incubators Guitar Case Fahrenheit (℉) or Celsius (℃) Review

Use them in cigar boxes. Temperature and humidity values are not adjustable. Of the two received, one is within 1 point of my calibrated device, the other is 4-5 points higher. I mean the price and that I use them for my fine. However, do not use them for mission-critical applications.

I bought these to control the humidity in my guitar room. The batteries lasted about 10-11 months. Very accurate. I just put in new batteries and decided to test both for accuracy. One was 1 degree up and the other 2 down. You can't ask for better, especially for such a cheap thing.

I put them in a bag of 69% Boveda and both were rejected by 3-4%. Not a bad product, just mentally realized how outdated they are. Not a bad product for the price though. Also, there doesn't seem to be an option to customize them. To update. You are completely useless. I can't get them to provide the right humidity, which is very important for my cigars. Buy a humidor. Here's what I ended up doing.

Putting these two units side by side the humidity is between 1 and 2% which indicates consistency, although I don't know if it's exact. Later, by placing them in a plastic bag with fresh desiccant, the bots' humidity dropped to 10%, which appears to be accurate. Now the temperature is less constant, if you put them side by side they will never be within 5 degrees Fahrenheit of each other, which is a huge amount for a mismatch.

I received this hygrometer and one was fine, the other fell apart and I can't put it back together. The rubber reset button is off and gone, and the outer case doesn't snap where it's leveled to allow the battery to be inserted. To prevent this, the case must be closed or sealed. Very disappointed with this as I feel it is inferior to another hygrometer I bought 2 years ago.

I put these two items in my humidor and each one is about 4-6% different from the other. I don't expect everyone to read the same, but they are inaccurate. They are much larger than the dial hygrometer I use. Temperature readings within 2 degrees of each other are fine, but humidity readings are too high. My dial hygrometer reads 73%; One of them reads 87%, the other 83%. I'll stick with the good old dial.