4-Pack Mini Digital Temperature Humidity Meters Gauge Indoor Thermometer Hygrometer LCD Display Fahrenheit (℉) for Reptile Tank,Jars,Guitar Case,Greenhouse, Garden, Cellar, Fridge, Closet
$9.97
Price: $9.97
(as of Oct 11, 2025 15:31:09 UTC – Details)
Accuracy
The humidity measuring range: 10%-99%RH with ±5% RH tolerance; the temperature measuring range: -58℉-158℉with ±2°F tolerance
Mini size
Mini Size making it ideal for use in jars, incubators, brooders,reptile tank, guitar case any other place
Long Battery Life
This Mini hygrometer thermometer is powered by 2 LR44 battery that provides 12-18 months of battery life. (Include 4 LR44 Backup Batteries)
NO BACKLIGHT FUNCTION
Specification:
Type: Digital Thermometer Hygrometer
Dimension: 1.89 x 1.13 x 0.6″ (48 x 28 x 15mm)
Humidity measurement range: 10%-99%
Humidity measurement accuracy: +/-5%
Humidity sampling period: 10 seconds
Battery Type: LR44 button batteries
Temperature measurement range: -58℉-158℉
Temperature measurement accuracy: ±2℉ (under normal temperature)
Function: Measuring temperature and humidity
Package:
4 x Digital Thermometer Hygrometer (Battery Included)
4 x LR44 Backup Batteries
Mini Digital Humidity Thermometer allows you to easily know the temperature and humidity around you
2in1 meter with built-in probe; digital electronic thermometer and hygrometer for measuring temperature and humidity for indoor use
Fahrenheit (°F) display, this thermometer displays temperature in Fahrenheit; Size: 1.89″ x 1.13″ x 0.6″ (48mm x 28mm x 15mm)
Temperature measuring range: -58℉-158℉ ; Humidity measuring range: 10%-99%RH (Measures conditions every 10 seconds)
Temperature measurement accuracy: ±2℉; Humidity measurement accuracy: ±5%RH
The mini hygrometer thermometer widely use in jars, reptile tank, guitar case, incubators, brooders, office, green house and any other place that requires monitoring of temperature and humidity levels
Customers say
Customers find the humidity meter compact and easy to read, particularly appreciating its large display. The functionality works well, and customers consider it good value for money. The accuracy receives mixed feedback, with some finding it reasonably accurate while others report inconsistent readings. The humidity level and battery life also get mixed reviews – while the meter reports temperature and humidity with consistency, humidity readings can be off by up to 2%, and some customers report batteries dying within months of use.
13 reviews for 4-Pack Mini Digital Temperature Humidity Meters Gauge Indoor Thermometer Hygrometer LCD Display Fahrenheit (℉) for Reptile Tank,Jars,Guitar Case,Greenhouse, Garden, Cellar, Fridge, Closet
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$9.97
BlueLace –
Small and accurate, very little variance.
Overall very happy with price and performance. I was concerned due to the variances some customer reported in readings. However the four I got have very little variance – less than a .5 a degree and no more than 1% humidity in a controlled environment. Very acceptable for this price. The units are somewhat smaller than I envisioned, but with a sharp display that is easy to read as long a you are facing it directly. Given the air ports on the back side, I made sure to not cover them when mounting the units on a wall (I used a thin strip of nanotape).Note that temperature is the smaller number, which might be an issue for folks with severe vision issues.Overall, I’d buy these again. Helped me immensely to identify cold spots in the house!
Andrew Ranicki –
Great for the price
I’ve bought these a few times for my various terrariums. They do the job for the price. They aren’t super accurate but close enough for my purposes. These are cheap enough that you can double up and get averages.My picture say 45% for all of them. That pic was taken in my living room. Outside humidity is 53% so that tracks. The AC will drop the humidity inside a bit. My thermostat is set to 72deg F so they’re all within a tolerable range of that.If you need high levels of precision, you’ll need to buy something much more expensive. If you’re looking for ballpark, these are great. I have 4 in my bearded dragon enclosure. 2 on the cool side and 2 on the hot side. This gives me a decent idea of what’s going on in there.The screens are easy to read. Nice and dark text. Easy in the light or dark.You CAN NOT recalibrate these. Change the battery if it’s getting wonky. If that doesn’t work it’s time to replace them. Usually after 2 years or so.
UlcerBoy –
Great but.. not that great (issues)
In all honesty, these have been amazing for my Pac-Man tank. The only issue that I found and the only reason why I did four out of five stars was because originally I was using only two of four these meters in my tank. I soon realized I needed to use three of them, and then realized I wanted to use the fourth for another tank.. so I took it out of the package. Everything was normal then I noticed that the fourth one wasnât quite reading correctly. The humidity number is not portrayed correctly on the screen at all, you canât even really tell what number itâs at for humidity, I tried taking it out the humid environment and leaving it alone for a few days. Tried putting it in some rice just to dry it out, then in front of a fan. Just in case it was a humidity issue and if something like too much humidity got inside of the meter itself and wasnât letting it portray the correct numbers on the screen. Tried that out didnât work. Nothing worked so not too sure whatâs wrong with the Hydrometer, though- Iâll say the fourth one itself was acting up before I even put it into the tank, so I donât believe it was the tank nor humidity that caused the issue of the meter itself. It was also the only one that did not come with a pull tab on the back as well, so maybe that was part of the issue as well?? So thatâs why I put four out of five stars for my review. Other than that they work great!! I recommend these highly 🙂
NJSARN_SoCal –
Compact and accurate readings
All 4 units agree in Hunidity and temperature. Good pricing. Easy to use in guitar ð¸ case. Compact sized.
RichB –
Great value
I’m giving 5 stars because they are slick, small and seem to work great.Excellent battery life.
Mike Sullivan –
Good for mid-range humidity, unusable at the low end
Short story: I bought these to install in PolyDryer containers to replace the OEM unit that doesn’t have a temperature indication, but the units I received read too high at low RH to be useable for filament storage monitoring.The humidity readings all within good agreement between themselves and several other devices as long as they were in room ambient conditions in the 45-50% humidity range. However, I bought them to use to monitor 3D printer filament storage conditions where the goal is to go as low as reasonably possible, so I’m more interested in the values at low relative humidity (RH). I ended up wasting time trying to figure out why I couldn’t get the humidity in the storage container below 26% (re-drying descant and filament). I swapped between the four and they were consistent at 26%, so I didn’t initially think it was these meters. Then I started trying other meters in the same container and they were consistently lower.Eventually, after doing extensive tests and weighing desiccant to be sure it was fully dry, I did an experiment using a small container with a large amount of freshly dried desiccant, no filament, and all the RH meters I could fit. I believe all of the various meters were at their lowest reading (I don’t expect them to read accurately below 15% or so, but 26% isn’t good enough). After 10 hours in the container, I had the following indications:These rectangular meters (I only used 3 in this test, but the one still in the PolyDryer is also reading 26%):26%26%26%Similar inexpensive round meters:14%14%14%Similar rectangular meter removed from PolyDryer:10%ETHMEAS wired remote indicating temperature humidity meter:10%Ambient Weather WH31E Indoor thermo-hygrometer sensor13%I didn’t expect these to be perfectly accurate, but the specifications say they read down to 10% with a +/- 5% accuracy. While I don’t have a NIST-traceable humidity instrument for comparison, based on checks against 6 different meters from 4 different brands it appears these are well outside of that specification.3-stars because these might be fine if you need something for mid range and they are consistent between themselves, but at low RH levels, they read too high to be usable for my needs.
Mars –
Great for chick brooder
Great little items for chick brooder. I can easily see temperature of different areas in the brooder to make sure heat lamp is hanging above at an appropriate distance. Easy to read display, easy to wipe clean.
Hay –
Works okay!
These are easy to use and work okay. The screen doesnât work great on one of them. For the price they are good.
Nader alslimi –
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WestCoast –
Good value for the cost. I left the 4 in a Boveda 75% calibration package for 24 hours and they were pretty close to bang on, the Calibre IV didn’t fare as well. The caliber is adjustable though. The temperature was consistent and in line with a more expensive temp meter. Just note that if exposed to light the meter will heat up, so if expecting a accurate temperature do it in as shielded area.Only critique is the displays can be a bit difficult to read unless looking straight on, looking at a angle and the contrast is difficult
Julie McFarlane –
They are so small and you have to look at them at just the right angle to see the numbers. Also, I put all four in the same place and they all had drastically different temperatures.
fashoom –
I have all 4 of these in a humidor with a higher quality calibrated Hygrometer and all 4 have a different display with a range of 4% between them.They don’t come with a mounting option but at their price that’s not a big negative.There’s also not much contrast on the display so it’s not always easy to read at 1st glance.If you need accuracy these probably aren’t for you.
grandriver –
I was pleased with the accuracy and consistency of these humidity meters as illustrated in the photo. Far better than I expected. I only had one problem. I wanted to put them on walls but the two sided stickies I used would stick to the wall very well (a PITA to get them off the walls) but would not stay on the back side of the meters regardless of which side of the tape I used. One fell off and met its death on the floor so I only have three now. The manufacturer should include some two sided tape that will hold on the back of the meter. I would purchase them again. If they had stayed on the walls I’d have rated them 5 stars.