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🌦️ Stay ahead of the weather curve—because your comfort deserves precision and style.
The U UNNI Indoor Outdoor Thermometer Hygrometer is a battery-powered wireless weather station featuring a high-precision Swiss Sensirion sensor with ±0.5ºF temperature accuracy and ±2% humidity accuracy. It offers a wide temperature range (-58ºF to 158ºF outdoor) and transmits data wirelessly up to 330 feet every 30 seconds. The large backlit LCD displays temperature, humidity, heat index, dew point, and mold index for up to three sensors, making it ideal for home, office, or garden use with reliable patented wireless technology and a one-year warranty.






| Additional Features | HIGH-PRECISION |
| Asin | B09FSYJZSH |
| Best Sellers Rank | #737 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #8 in Indoor Thermometers |
| Brand Name | U UNNI |
| Color | White+Grey |
| Connectivity Technology | WIRELESS |
| Customer Reviews | 4.4 4.4 out of 5 stars (10,220) 4.4 out of 5 stars |
| Display Type | LCD |
| Included Components | 1 x Hygrometer 1 x User Manual 1 x remote sensor, one-year warranty |
| Is Used Where | Indoor, Outdoor |
| Item Length | 4.8 inches |
| Item Weight | 0.85 kg |
| Manufacturer | U UNNI |
| Model | UN0581 |
| Number Of Batteries | 3 AAA batteries required. |
| Number Of Items | 1 |
| Number Of Packs | 1 |
| Part Number | UN0581 |
| Power Source | Battery Powered |
| Recommended Uses For Product | Garden, Home, Office, Laboratory |
| Sensor Technology | Wireless |
| Shape | Rectangular |
| Specific Uses For Product | heat index , dew point index and mold index |
| Style Name | Compact |
| Temperature Accuracy | 0.28 °C |
| Unit Count | 1 Count |
| Upper Temperature Range | 158 °F |
User
Accurate and reliable
They are easy to set up and accurate. Very happy with the purchase.
User
Works and connects right out of the box.
Works great. Large, readable numbers on the monitor.
User
Works great!
Easy to set up and so far very accurate. Knowing the humidity level is a great help as well as knowing what the next weather will bring. Highly recommend this product.
User
It is accurate and blends into many places!
It works fine! I wish the display was a larger, like the original version. It is accurate, which is the reason I purchased it.I have it on the kitchen counter but with my glasses can only read the top number. It is an attractive piece and making larger to read, with my glasses on, would be great. Yes, a side effect of aging! It happens when over 39!!!
User
I like it.
It appears to be well made and sturdy. The sensor is much sturdier than others I've used in the past. I hung mine on a nail and it hangs flat against the wall nicely. The casing at the point of contact with the nail is 5/8" deep so I have no concerns about it breaking there. My first location of the sensor eventually became drenched in late afternoon/early evening sunshine and the temperature sensed was most definitely affected by this, but that's not a bad thing really as it showed me that the sensor is sensitive enough to register the sunshines effect. I did relocate the sensor though as I want an accurate air temperature reading without the suns effect. The accuracy seems to be good. Compared to other thermometers I have around the house it consistently measure +/- 2°. I've also compared it's reading to the NWS published temperatures for my location and again it stays within the +/-2° sometimes 3° range. Very acceptable to me. The display unit is also sturdy and well made. It displays both indoor and outdoor temps and keeps the min and max for the day. I set mine to display heat index but dew point and a mold indicator are also available. The backlight button is easily accessible and is at the point of contact from where the unit hangs so I'm not constantly knocking the thing off the wall. Excellent design there I would say. The display unit is heavy enough that it hangs well and probably wouldn't be easy to brush off the screw or nail it hangs from if you had it in a location that that could happen. It also has a pull out stand on the back for setting it on a table or any flat surface, which also seems to work well. I had no problems with the instructions and had the batteries inserted and the settings set within just a few minutes. Quite easy actually. I like this thermometer and am very pleased with it. I can't speak to power usage and battery drain at this point as I've only had it for a short time, but I might add that information after I've used it for a bit. Overall I'm very happy with my purchase.Update: December 24, 2025Well, I've had the thermometer for a year. It's still working with no complaints. Original batteries still installed. Accuracy is the same. I'm still happy with my purchase.
User
An easy to use and read temperature gauge
I thought I needed to replace my existing temperature gauge and so I began searching for a replacement. Ultimately, I settled on this unit because it gave me 4 things I was looking for that my old unit did not. First, it updates every 30 seconds. Second, it can be easily read by using the backlighting. Third, it tells me the humidity level along with the temperature. Finally, it indicates whether there is likely to be rain and whether conditions are right for growing mold. Admittedly, the fourth (weather and mold) hadn't been things I was looking for during my searching. We have been using this gauge for several weeks now and are very pleased with it. I noted that some reviewers commented that the temperature readings are not accurate, but I am unsure how they came to that conclusion. As best I can tell, the readings are accurate (it measures to a tenth of a degree, eg, 74.6, and I have no way to verify the accuracy of that measure). I would definitely buy this unit again. It was very easy to set up -- a hassle-free product.
User
Easy to set up
So far working great. Not having to go outside in Arizona heat wave is great. I wasn't home when we had monsoon weather so don't know how it completely works
User
It works
I had one for 3 years and it finally quit working. I bought another and it’s doing great so far.
User
Quick delivery and just what was needed
I installed the batteries and it started to function. Perfect!
User
Muy bueno
Excelente
User
An excellent product
Just what I wanted. It does what I require.
User
Works very well.
was easy to get going. I like seeing the outdoor and indoor information without big installation. Uses lots of batteries (5)
User
Nice and small for table
Had this weather station for a couple of weeks now. Works good, looks good, only thing missing is a clock on screen. But it’s ok it doesn’t have it. Nice big numbers on screen.
Trustpilot
1 week ago
2 months ago