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

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

Great item to keep track of humidity

I use one of these in my humidor as the mechanical ones tend to be unreliable. It takes up little room and works great. I compared it to a larger accurate humidistat and it checks out.

I've switched to these from a previous brand I was using as these have a wider range of sensitivity. These go as low as 10% while the other ones I was using only goto 20%. I like knowing if my filament storage is at 10% or 19%.

I love these little things. I have them in my grow tent and three different points and they are all 100% accurate and read the same reading. They come out of the box when you buy them all saying the same Fahrenheit and humidity they are 100% accurate in every way for being how small they are by 100% recommend these You can switch between Fahrenheit in Celsius also

The meters arrived together in a single box and were already powered on.When I previously ordered from another vendor, each meter came individually boxed with a plastic tab to prevent battery drain until first use. With these, there's no way to know how long they’ve been sitting on a shelf running or how much battery life remains.The listing claims high precision monitoring with a humidity accuracy of ±5%RH and temperature accuracy of ±2°F, updating every 10 seconds. However, across the six units I received, the readings varied:Humidity: 17%, 20%, 15%, 18%, 18%, 20%Temperature: 70.5°F, 72.1°F, 71.4°F, 70.7°F, 71.9°F, 71.4°FWhile the temperature variation is within the stated accuracy range, the humidity readings seem inconsistent, with a spread wider than expected.That said, these were half the cost of the others I ordered, so time will tell if the savings were worth it. If accuracy and battery life matter to you, you might want to consider spending more on a higher-quality option.

Work well