4PCS Mini Digital Hygrometer and Thermometer Reptile Thermometer with Extend Probe (Only Temperature) Indoor Temp and Humidity Meter with Magnet
$13.99
Price: $13.99
(as of Oct 12, 2025 10:50:13 UTC – Details)
Product description
Mini thermometer supports two uses, with probe or not. Probe is waterproof, the thermometer is Non-waterproof！！The wired probe was for temperature only, not for humidity.
Space saving and wide application
Mini size perfect for home, room, office, incubator, garage, basement, and other places where you want to monitor temperature and humidity levels
Extended probe can help you measure over a longer range (in1.5m)
The wired probe was for temperature only, not for humidity.
12-18 Months Long-life Batteries
Each small temperature and humidity gauge is powered by one long-life CR2032 button cell battery, easy to buy and replace, which is already installed in the thermometer humidity monitor.
Note: Pull out the insulating sheet to use.
Max/Min Records in 24 Hrs
Displays current humidity and temperature and Max & Min humidity and temperature records for the past 24 hours, so you always stay informed about changes to the environment around you and make timely adjustments.
Temperature range -4℉~158℉（-20℃~70℃） Humidity range 10% to 99% RH Temperature Accuracy ±1.8℉/±1℃ Humidity Accuracy ±5%RH Measurement Frequency 10s Package Mini Hygrometer and Thermometer (CR2032 battery included) Extended probe 1.5m The wired probe The wired probe was for temperature only, not for humidity.
Package Dimensions : 5.2 x 4.96 x 0.79 inches; 6.38 ounces
Item model number : GSH-MC04-1-B
Batteries : 4 CR2032 batteries required. (included)
Date First Available : July 24, 2024
Manufacturer : GOUSHIHUI
ASIN : B0CZ6QKS36
Best Sellers Rank: #18,614 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #71 in Indoor Thermometers
Customer Reviews: 4.5 4.5 out of 5 stars 386 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
One machine dual-use: Just put the sensor probe on the place you want to measure temperature, please note that the sensor probe is waterproof, it can use as an aquarium thermometer.But the thermometer is non-waterproof. The wired probe was for temperature only, not for humidity.It is also can measure temperature and humidity without using a probe。
MAX & MIN Records: This hygrometer digital thermometer displays high/low temperature and humidity levels to allow you to make proper comparisons using your environmnet’s data.
High Accuracy & Quick Refresh Rate: This inside thermometer features a high accuracy of ±5%RH and ±1.8°F, making it ideal for measuring fluctuating readings like those found in a greenhouse; Data measurements are updated every 10 seconds to give you the latest updates on your environment
12-18 Months Long-life Batteries: Each small temperature and humidity gauge is powered by one long-life CR2032 button cell battery, easy to buy and replace, which is already installed in the thermometer humidity monitor.
Multiple Placement Options: This humidistat has 2 placement options – Tabletop Stand and Magnetic Back place the wall thermometer anywhere you wish such as humidors greenhouse garden gellar closet guitar case.The wired probe was for temperature only, not for humidity.
Customers say
Customers find the humidity meter easy to read with large numbers for both temperature and humidity, and appreciate that it can be placed in different rooms. The device functions well, with one customer noting it works fantastically for reptile tanks, and customers find it good value for the price. They like the magnetic feature, with one mentioning it sticks well to metal surfaces, and one noting it’s particularly useful for hatching quail. The accuracy receives mixed feedback, with some finding it remarkably consistent while others report it’s not very accurate.
13 reviews for 4PCS Mini Digital Hygrometer and Thermometer Reptile Thermometer with Extend Probe (Only Temperature) Indoor Temp and Humidity Meter with Magnet
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GI10 –
Remarkably consistent and accurate thermometer and hygrometer. Bought 24. Outstanding product.
I NEVER give five stars. Yet I did for these. These are remarkably accurate and consistent, both the thermometer and the hygrometer. Multiple units are within 1 degree F and 2% humidity. I still cannot believe how uniform these units are. I have bought 6 sets of four — 24 in total and each and every one shows the same readings to +-1F and similarly +-1-2%. Formal dispersion in readings amongst 24 units is <1F and 1% in humidity. Unbelievable. Particularly incredible for a hygrometer. Nice magnet on back. They use a readily available, inexpensive and fairly large CR2032 battery. Quite readable display in normal lighting. The battery lifetime is still TBD for me -- so 4 stars since not sure -- but a definite 4 stars for the excellent choice of CR2032 button cell. CR2032 are cheap and available and fairly large battery.After researching a huge number of the small temperature units on Amazon, I decided that the vast majority were Chinese junk. Expensive batteries, bad design. Inaccurate. Yet these units demonstrate that Chinese companies can produce a well-thought out product that is very well-engineered and can be manufactured to a high degree of consistency. These stand out for their excellence and are a credit to the company that designed and manufactured them. I think they are worth paying more for. I sincerely hope that the company does not lessen the quality in search of the lowest price. That "race to the price-bottom" destroys so many Chinese products. It is good to find a product that demonstrates that Chinese companies can do "excellence".
Darkwave Fan –
They seem fairly accurate and the magnets hold them well
I put all 4 of these in the same place, to check their calibration. They all agree on the temperature and humidity, and they report close to the the same temperature as my infrared temperature sensor – less than a degree difference.The magnets on the back are strong enough to keep them in place under “normal” circumstances. I have them on magnet boards with other magnetic objects, and they haven’t fallen off as I shuffled stuff around on the magnet boards. I have one magnetically to a rolling steel toolchest, and the sensor has not fallen off as I rolled the toolchest around on cracked concrete floors.
jpt –
Do what they say and just work
I was really impressed with these little units. I use them for my hydroponics setup and they just work. I have the temp sensors both in air and submerged in water and have had no issues with accuracy or longevity. Have been using them for nearly a year and the original batteries are still going strong. Plenty of cord from the unit to the sensors and best of all they have a magnet on the back which is easy to place on my metal shelving units or wall brackets. I would certainly buy these again, if they ever quit…….
MeanMike –
Decent but not perfect
2 units of 4 read exactly the same. . Is close, the other is off. It’ll have to do. Just edited…seems like they are really ‘close’ enough. Cheap but work. If you really need EXACT look elsewhere. I’m guessing they are about 1 to 3% off RH which for stix is really accurate enough.
Vintage Nurse –
Verified new humidifier works
We a humidifier installed in our furnace. I purchased these humidity gauges to see if the humidifier actually increased humidity in the house. To my dismay, the 4 gauges all read only 10% humidity. They were consistent. It caused me to recheck to see if the humidifier was set up correctly. After reading the humidifier’s manual I discovered the installer had not correctly turned it on! So I made an adjustment and the next day, my 4 humidity gauges verified the humidifier was working! All of them read consistently between 40 and 50%! I would also add that the gauges are very simple to set up, and I was amazed that all four measure very closely and tend to match the temperature on our center hall thermostat.
Mark B –
Good quality
Accurate and consistent when placed beside one another.
WheelerSG –
Temp and Humidity in Large Numbers on Same Screen
I use these on my mini-split heads (HVAC) since the heads themselves do not show the current temp – only displays the set temp, with the sensor on the head itself (which is dumb.) It didn’t feel like the units were managing the room temp very well and I was frustrated trying to figure out the best set temp to get a decent room temp feel. Stupidly, I assumed the mini-split casings were metal which is why I ordered the magnet ones, but the casings are actually plastic. I attached the thermometers to the wall near the unit and the thermometers confirmed it was not cycling based on the temp at the unit that I had set. I’m now able to adjust the unit set temp to what it needs to get them to cycle so the room feels much better. I love that that these show the temp and humidity in large numbers on the same screen!
Joseph of The Tower –
Not accurate
Not accurate and takes awhile to stabilize if you move it
Julian𸠖
Excellent! I have them placed throughout the house, including one in my greenhouse, and they accurately record the exact temperature and humidity. I tested them with other instruments to check their precision, and theyâre quite accurate. They also record max and min temperature and humidity, which helps me keep track of conditions in my greenhouse. The batteries seem to last a long time, and I also like the design and color, which make them easy to place anywhere without standing out too much. Absolutely recommended
Benny –
Absolut geniale kleine Helfer.Hier und da steht einer und man weià besser Bescheid.Insgesamt hab ich die dafür benutzt, um die Heizungsanlage in den optimalen Bereich zu bringen und ein Raumgefühl vs reale Temperatur zu erhalten.Kann ich jedem empfehlen!
nicholas seaton –
Excellent gold stars all-round
Amazon Kunde –
Ich habe für mein Treibhaus eine günstige Anzeige für Temperatur und Luftfeuchte gesucht. Dieser Artikel erfüllt diese Aufgaben perfekt. Praktisch ist der Magnet, mit der die Anzeigen einfach befestigt werden können. Ich habe eine Flachstahlstange mit in den Blumentopf gesteckt und dort die Anzeige einfach magnetisch angebracht. Top Produkt und zu einem günstigen Preis. Vor allem, weil es ein 4er Set war.
M GILLHAM –
Happy with these for checking moisture content . Like previous reviews have mentioned they seem accurate, bought four and placed them all around the house with various readings then when placed together they ended within 1% of each other. They are quite small which is not a bad thing as they don’t stand out to much. Would buy again