Mini Hygrometer Indoor Humidity Meter Hygrometer Thermometers 6 Pack Humidity Meters Gauge Hygrometer Mini Digital Thermometer Hygrometer with Fahrenheit (℉) for Humidors, Greenhouse, Garden, Cellar

These mini hygrometers are a great value. I picked up a six-pack and tested them side by side in the same room—impressively, all six gave identical humidity and temperature readings, which gave me confidence in their accuracy. They're compact and super lightweight, so I’ve placed them throughout the house, near windows, even in the attic next to a humidifier setup and it does confirm the dehumidifiers reading.The screen is easy to read at a glance, and there’s no complicated setup or batteries to worry about replacing constantly. If you want a simple, effective, and low-cost way to monitor indoor humidity in multiple spots, this little pack is a solid option. No complaints at all!

I didn't realize how small they were but dang do they work well. They also work super fast and are very accurate. Greate purchase and has a larger print to make it good for a quick reading!

They had different accuracy reading in the packaging, but all were about the same. Worked well, nice and compact, but if they get water on them they will read very moist for hours. They feel durable good for the price though.

Love these little things. Perfect to have throughout the house. They fit anywhere and are accurate.

These work great and having the humidity helps me state my case. I work in buildings that refuse to turn on the A/C for works and I can use these to hold them accountable to OSHA regulations! They can’t argue with me when I show them to their face the temperatures they are making us work in! No excuse now!

So, I do a little 3D printing and have many filaments. I have tried different methods of keeping my filament dry and, lately, I decided to try having individual dry boxes where they are airtight, and I add some dissecans on them to try and keep the moisture under control. I have tried vacuum sealed bags before or having a big airtight container where I fit several of them, but nothing has been really effective. In any case, I am using these Hygrometers to put them inside the dry boxes to make sure they have low moisture inside. For that purpose, they are good enough. I do have to say they are not very accurate, but you will get a ballpark +-5 degrees since to be the range. Also, they don't match temperatures when on the same room. I actually had them all inside the same dry box. I left them in there overnight and the next day I check them without opening the box and out of 6, 3 had the same reading and the other 3 were off by +-5. If you are looking for accuracy, they are not the best but, if you just need to make sure things are around a certain temp, they are cheap enough that are worth it.

Perfect for my needs. They were small and so far seem accurate. The price was great. I wanted them for different corners of an egg incubator to make sure I didn't have hot spots while hatching eggs. I also wanted them where I have baby rabbits to see what the temps and humidity are running in breeding boxes and I like to keep one at the front door and in my workshop to see if its too cold to paint or poor concrete, whatever project I'm working on that is temperature sensitive. These are small and unobtrusive so you can put them up almost anywhere but large enough to see without glasses so I stay hands free. They don't come with stick up tape but they are light enough that any double face tape will work. I hope this helps!!

I play guitar, banjo and mandolin and I do guitar repairs. I usually have between 18-25 string instruments in the house at any given time. These instruments love to have indoor humidity between 40-55%! The only time that happens naturally for us here in South Central Pennsylvania is during the Summer. So we are running ultrasonic humidifiers 7-8 months of the year. I have one in every room - the guitars are all over the house - and it helps me keep it moist enough, but not too much. They are small and can be placed unobtrusively on a sheld or side table. Recently, my daughter mentioned it being too dry in her apartment, so I bought her a 6 pack as part of her Birthday present - she loves them as much as I do. Batteries last about 9 months to a year and I buy them on Amazon, too!