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'll jump in with the pros and the cons. There will be some overlap.Pros:- A cost effective solution for knowing the temperature and humidity level. Considering you get six of these guys, it's an amazing buy.- Small and compact measuring approximately 1.875 by 1.25 inches. Numbers are easy to read with the humidity number being displayed most prominently.- Fairly accurate. Measuring them against each other on my desktop, all read between 68.7 and 69.4 degrees F with humidity registering 36-38 percent with one showing 36, three displaying 37 and two showing 38. I'd note I do have a small heater running at one end of my desk, so this to me falls into the fairly accurate for the price category.Cons:- No way to calibrate.- These were designed to clip into something, though I don't know what. There are clips on the sides of the units.- While they are free standing, there is no way to set them at an angle.- They do feel pretty cheap, so durability and battery life are questions I can't currently address.Recommendation? Yes, I think I would recommend them for simple, basic information. I intend to put a few of them into my seed starter trays to keep an eye on humidity and temperature when I start my plants, so who knows how they'll do in that warm, humid environment. But I'd order them again given my overall first impressions.

Accurate - well designed - small - works well - durable - easy to see

Used these inside of an incubator without a humidity control to hatch chicks- I found that every so often it would suddenly read 10° on humidity, but as soon as I popped the lid to check, it would shoot up to 40%. So I think the 10% readings aren’t accurate - which can be an issue if you are trying to keep humidity higher without disturbing your eggs particularly during lockdown. It caused me a fair amount of stress, but thankfully, it worked out OK in the end. However, I would probably put more than one inside of an incubator just in case. Also, I found that the humidity would jump around sometimes, but other times be static for 12 hrs or more so again not sure on accuracy. Temp seemed to hold well though.

These work well! I use them in 3d printing and they seem to work well. They don't go below 10% humidity but it works for my needs!

Have been testing these units out in various locations in house.Well calibrated and consistent temp / humidity readings.Helps me keep the house at optimal humidity.Also great for monitoring humidity inside filament storage bags.

They are accurate and very useful. I order these twice and had one bad in each batch. Kinda mad because I needed those 2. Now I gotta order another set. Shouldn't have too. Otherwise they are useful when they work.

Works great. Clear digital screen. Accurate reading. Small and looks good. Doesn’t take up a lot of room.

Small, convenient, great price, works great. Buy with confidence.