Mini Hygrometer Thermometer 2PCS Mini Digital Humidity Gauge, AikTryee Hygrometer Indoor Humidity Monitor, Temperature Humidity Gauge Meter for Humidors, Greenhouse, Garden, Cellar, Closet, Etc

The temperature seemed to be accurate as both indicated the same temperature, but the humidity readings varied by 2 +/- percentage points when sitting side by side. Still close enough for what I need. and a good price.

Definitely worth the money you get two temperature/humidity gauges 4 sets of batteries and two velcro tapes. I am highly impressed both gauges were pretty much spot on and also were within 1 degree for temp and 1-2 points off humidity compared to my zoomed hydrometer. I want to note that the probe it is placed at the bottom of my gecko tank so there naturally would be a little bit of a discrepancy between the zoo med and the two aik tryee mini hydrometers. My zoo med hydrometer was about $10 this was half the price and you get 2 hydrometers plus extra batteries I wish I came across this earlier. I am happy with my purchase and will be purchasing more for my various reptile tanks.

Much more accurate than the analog hygrometers that came with my humidors. Its nice to have two of them. I put them both in the same humidor, and they read the exact same. Then I moved them to different places in the same humidor, and they registered the difference in humidity in different spots. I then swapped places with them, and they each adjusted to the same readout the other had in the same spot. Very pleased.

I just wish there was an on/off switch!

I have had these for a couple of years. They come with batteries installed. Best to reboot them before use. Take both batteries out, make sure the screen goes totally blank, reinstall batteries. If you reinstall batteries before screen goes totally blank it will not reboot, it will go back to what it was before batteries were removed. If you have problem with them down the road, do a reboot.

Helped keep humidity levels in my incubator on track. Never once had any issues

It’s a great purchase. The original battery was dead but the second free batteries make up for that. It’s pretty accurate.

This 2-pack of combo hygrometer (measures humidity) + thermometer are small, light, and seem to work well (placing them near each other and a 3rd model of a different brand, the readings are not identical but are fairly close, within about 0.5 degrees in temp and 1–2% humidity. They are also a great value, and come with batteries pre-installed (requires 2 each) PLUS comes with 4 spare batteries (one set for each unit). The only downside is the mounting. They DO come with small pieces of double-sided 3M tape (another nice touch), BUT using it to mount them would (a) block the battery compartment on the back and (b) may leave sticky residue on your glass surface. It would be great if they had with a small loop so they could be hung or a small hole to use a suction cup. But if youre OK with that quibble and dont need perfect accuracy, they are a great value and do the job.

good product fast shipping

The 2 meters for $6 bucks or whatever is awesome. Comes with double sided sticky tape. But if you put it on the back, it covers where you change out the battery, so I stuck it to the bottom, which isn’t the most convenient for reading but it serves its purpose well enough for the price.