6-Pack Mini Hygrometer Indoor Humidity Meter, Mini Digital Thermometer Humidity Gauge Meter, Indoor Thermometer Hygrometer Monitor Fahrenheit (℉) for Reptile Thermostat, Jars Reptile, Fridge

These seem like the baseline hygrometers that folks use for a lot of things. I have them for my 3D printing enclosures to track moisture. They do exactly what they are meant to. Only wish would be that they could swap the big display.

Love these! Use them to monitor the humidity in my guitar cases. Small, compact, fit and work perfectly!

Of the 6, 5 more or less provided the same reading. One was off by a couple degrees so I tossed it.

I purchased these hygrometer indoor humidity gauge because I have heat pumps and everyone can run on a different temperature. I'm able to check to see if each room has the proper humidity level. So, I know if I need to get out the dehumidifier or the humidifier!

You need these for herbs and these work great no way to be sure how accurate they are but they all show the same when there in the same place so seems pretty accurate

Well, like a few others have said, the readings were all over the place. Also, like the others said, they came with the batteries already on. Who knows how long these have been stored on a shelf somewhere? How will this affect the battery life? At any rate, I'll do a 24 hour salt calibration and see where they stand after they've had time to "settle in". If they come in close to 75% each, then I'll update the rating. I'm keeping my fingers crossed...

Perfect for keeping track of the humidy thru the house. I would recommend 100%

All are working great!