🌡️ Newlight66 Digital Hygrometer - 12 Pack Indoor Outdoor Hygrometer Thermometer (°F) for Humidors, Home, Car, Greenhouse with Humidity Gauge Review

Everything seems to read within a percent/degree or two of each other. The only problem was that ten of the twelve had a strip over the batteries that you remove to activate the batteries. The two that didn't have the strip ran out of batteries.

They are good for what I use them for but I'm pretty sure the accuracy can vary slightly. Not much I would say, a score or 2 +/-. I don't really care, I only use them in my curing jars, so I'm more interested in changes over time, so exact accuracy isn't a big deal.

They're cheap so I wasn't expecting them to be incredibly accurate, but that affects the star rating. I use them on my Dart Frog tank and only change them every now and then to make sure they get the same readings. If it's just for home use, I wouldn't mind.

I can't comment on the battery life but I'll say for the price if you need to know the approximate temp and humidity they work. Please refer to the image as I have found that the humidity percentage can be reduced to 3 and the temperature to 3. So this is not an exact tool, I think that's what you get for the price. They meet my needs and the price is right.

These thermostats are exactly what I wanted. I'm confused that they were all packed in boxes with batteries attached. That's very wasteful. There is no reason to connect the battery until the customer needs to use the device. I had to open all 12 drawers and disconnect the batteries for storage. Otherwise they all seem very reliable and stable.

I put them in a jar of 62% Boveda for a few hours and they never left the very low 50s. So I did a salt test and instead of 75% they all showed 61-63%. So I repeated the salt test with a couple of other inexpensive hygrometers and both hit 75% within a few degrees while stuck in the low 60's. So don't freak out, they really are all 11-13% off.

Although the temperature or humidity readings may differ when placed side by side, the difference is only 1-3 digits. They work great. I cut the lids of the cans to fit snugly with no air gaps to get accurate readings during the curing process. This was very helpful in determining which jars needed more air and which jars were ready to close, with the occasional burp.

My plants and I love dates... Well, they may not appreciate it directly, but they are healthier as a result of my heightened awareness. The sheer volume of these bad things that come with it makes me want to toss them all over the house. I even planted some directly in the pot, which helped me understand that there is a big difference between ambient moisture and pot moisture in healthy plants. My best plants like 15-22 units more humidity than the room. Combined with a 3-in-1 soil tester…