Mini Hygrometer Thermometer Digital Indoor Humidity Gauge Monitor with Temperature Meter Sensor Fahrenheit (℉)

I got this to keep in the case with a mandolin. Its not an expensive instrument, so Im not rabid about accuracy. I dont have anything to check it against, but if its within a couple of percentage points, thats all I need. And Ive no reason think its less accurate than that. It comes to a reading pretty quickly. First time I checked it I learned that I was probably overdoing humidification a bit. Good thing to find out. I give accuracy 4 out of 5 only because I dont know. The size is good for keeping in the case of a small instrument like a mandolin, violin, or ukulele. I havent had it long enough to be able to speak to battery life. It came with batteries installed, and two extra ones - a nice touch, unless its indicative of short battery life. Time will tell. I give battery life 4 out of 5 because I dont know yet. The display is easy to read. The readout shows both temperature and humidity, with humidity the most prominent, which is what I want in this case (if youll pardon the expression). The temperature readout is in Fahrenheit. The box indicates that its a Fahrenheit sensor, so no changing it Celsius. At the price, I wouldnt really expect that. Because its not explicitly sold as a musical instrument case hygrometer, its significantly less expensive than those that are. Ill probably be buying another one.

This product has brought new life to my old egg incubators. Highly recommend. Sent ready to use with additional batteries.

Temp varies from one device to the next so you never know if its correct or one degree off.

I put this in a 3d printed mount for my filament dry box to keep an eye on things. works as intended. didnt test for accuracy but seems about right. Wish it was backlit.

Perfect. Easy to use. Nothing to do but place it into the incubator from package. The last one lasted almost 2 years. Great price. No frills.

These help me alot and I keep getting more. Love there little size and accurate reading.

This is a very basic hydrometer that I got to toss into my much smaller acrylic table top humidor where I keep a dozen flavored sticks stored. After an overnight salt test it held at 73%RH so it was off by just 2% which isnt the end of the world. Considering the unit cant be calibrated I expected some variance to it being off slightly. Im just glad it wasnt off by 5+%. I wasnt a fan of the fact it was already on when I opened the box, it would have been neat to have a plastic tab to pull like many small gadgets like this where I can activate the battery upon receipt. Overall for the value Im happy with it and would consider it again if I needed one. Id even recommend it to a friend because even if one turns out to be a bad unit its not costly.

Ease of use. Price point hard to beat. Even came with replacement batteries. No one does that. Very, very compact.

Great purchase for our humidor. The hydrometer that came with the humidor was not very accurate so we purchased this one. Works perfect and is easy to read with our aging eyes. Fits perfectly!

Small, but very easy to read