# U UNNI UN0581 Wireless Indoor-Outdoor Thermometer Hygrometer

Indoor-Outdoor Thermometer Hygrometer: The U UNNI UN0581 wireless weather station measures indoor and outdoor temperature and humidity, with heat, dew point, and mold index readings. Its remote sensor, room-readable LCD, and brief button-activated backlight suit quick checks around the home, though customer feedback is mixed on accuracy and durability.

- [Original product page](https://best-deals.pro/product/u-unni-un0581-wireless-indoor-outdoor-thermometer-hygrometer)
- [View offer](https://best-deals.pro/visit/u-unni-un0581-wireless-indoor-outdoor-thermometer-hygrometer)
- Market: US
- Language: en-US
- Currency: USD
- Brand: U UNNI
- Model: UN0581
- Category: Home & Kitchen > Heating, Cooling & Air Quality > Environmental Thermometers & Hygrometers
- Price: 18.99 USD
- Previous price: 22.99 USD
- Discount: 17%
- Price checked: 2026-11-12T11:30:54.198Z
- Rating: 4.4 / 5
- Reviews: 10739

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Displays indoor and outdoor temperature and humidity, plus heat index, dew point index, and mold index for sensor locations.
- Listing claims wireless data transmission within a 330 ft radius and updates every 30 seconds.
- LCD backlight turns on with a button press and is stated to remain lit for 10 seconds.
- Supports up to three sensors when set to different channels.

## Pros

- Combines temperature and humidity readings with heat, dew point, and mold indices on the display.
- A remote sensor allows outdoor readings alongside indoor conditions without a wired connection.
- Tabletop or wall-mountable placement and a touch-activated backlight support convenient spot checks.

## Specifications

### Identity
- Brand: U UNNI
- Model: UN0581
### Display
- Screen technology listed: LCD
- Backlight duration: 10 seconds
### Sensors and readings
- Sensor technology: Wireless
- Indoor temperature range: +14.2ºF to +122ºF
- Outdoor temperature range: -58º F to +158ºF
- Indoor/outdoor humidity range: 1% to 99%
- Temperature accuracy claimed: +/-0.5ºF
- Humidity accuracy claimed: +/-2%
### Wireless and controls
- Transmission range claimed: 330 ft
- Update interval claimed: every 30 seconds
- Additional sensors supported: up to 3 sensors
### Power and battery
- Power configuration: Battery Powered
- Battery requirement: 3 AAA batteries required.
### Dimensions and installation
- Form factor: Rectangular
- Weight listed: 0.85 kg
- Length: 4.8 inches
- Placement: tabletop or wall-mountable
### Appearance
- Color: White+Grey
- Style: Compact

## Before you buy

- Listing specifications are not fully consistent: the details section gives temperature accuracy as 0.28 °C, while feature text claims +/-0.5ºF, and the battery requirement is three AAA batteries while the package information excludes batteries. Confirm the selected listing's accuracy and battery details before buying. The stated 330 ft range and 30-second interval are manufacturer claims, not independent measurements.

## In the box

- Hygrometer (Included)
- User manual (Included)
- Remote sensor (Included)
- One-year warranty (Check selected pack): Manufacturer-listed coverage. Check the selected listing for applicable terms.

## A good fit for

- Home, office, garden, or laboratory users who want local indoor and outdoor temperature and humidity readings.
- Buyers who want heat, dew point, and mold index information on a compact display rather than app-based monitoring.

## Less suited to

- Anyone needing independently verified accuracy or reliability, given the mixed customer reports on readings and durability.
- Buyers who need app alerts, data logging, or a continuously illuminated display, none of which is specified here.

## Customer feedback

Customer feedback commonly describes setup as easy and the display as clear and readable from across a room. Customers also praise the compact size and button-activated backlight. Reports on accuracy are mixed, with some finding readings reliable and others describing temperature readings as far off. Some customers report units stopped working within 10 months. These experiences matter for a station whose main purpose is local temperature and humidity monitoring, so buyers relying on precise readings or long service life should weigh the reported variability.
- Positive themes: Customers describe setup as easy and the display as readable from across a room.
- Positive themes: Customers appreciate the compact size and backlight that turns on when touched.
- Negative themes: Some customers report units stopped working within 10 months.
- Mixed feedback: Customers disagree about accuracy, with reports ranging from very accurate readings to temperature readings being far off.

## Frequently asked questions

### What does the U UNNI UN0581 measure?
The listing says it displays indoor and outdoor temperature and humidity, along with heat index, dew point index, and mold index readings.
### How does the outdoor sensor communicate with the display?
It uses wireless transmission. The listing claims a range within a 330 ft radius and updates every 30 seconds, though actual performance is not independently verified.
### Can the station use more than one sensor?
The listing says it supports up to three sensors, provided they are set to different channels.
### Are batteries included?
The specifications require three AAA batteries, but the package information says the warranty excludes batteries. The supplied listing details therefore do not confirm that batteries are included.

## Alternative options

- [Indoor Outdoor Thermometer Wireless Digital Hygrometer with 3 Sensors \| 4.5" Clear Display, Easy Setup, Battery or USB Powered, High/Low Temperature Humidity Alerts, High Accuracy Sensor](https://best-deals.pro/visit/u-unni-wireless-thermometer-hygrometer-3-sensors)
- [TempPro TempAir 500 FT Indoor Outdoor Thermometer Wireless with Sensor \| Large LCD Display, No Hub or App Required, Outside Thermometer & Cold-Resistant Sensor for Patio Garage, Batteries Included](https://best-deals.pro/visit/temppro-tempair-plus-tp60b-wireless-thermometer)
- [GoveeLife 2.0 WiFi Hygrometer Thermometer with Gateway, Mini Sensor 3-Pack \| Temperature and humidity monitor with APP alert, 2yr data & battery, indoor for wine cellar/bedroom/basement, 2.4G Wi-Fi only](https://best-deals.pro/visit/goveelife-2-wifi-hygrometer-thermometer-gateway-3-mini-sensors)
- [Sainlogic 5GHz/2.4GHz Dual-Band WiFi Weather Station, 12-in-1 \| High-Precision Sensor, Rainfall Monitoring, 2-Year Data Storage, Wireless Indoor/Outdoor Monitoring & App Alerts](https://best-deals.pro/visit/u-unni-un0581-wireless-indoor-outdoor-thermometer-hygrometer)
- [X-Sense Wi-Fi Thermometer Hygrometer with LCD, 3 Sensors & Base Station \| LCD Digital Sensors Track Temp and Humidity with App Alerts and Data Export at No Cost for Home, Basement, and Wine Cellar](https://best-deals.pro/visit/u-unni-un0581-wireless-indoor-outdoor-thermometer-hygrometer)
- [WiFi Weather Station with Rain Gauge, Wind Speed, Tuya App,Weather Forecast \| 7.5'' LCD Display Wireless Weather Monitor with Indoor Outdoor Thermometer Hygrometer, UV Index, Clock for Home, Garden](https://best-deals.pro/visit/u-unni-un0581-wireless-indoor-outdoor-thermometer-hygrometer)
- [Sainlogic Wireless Weather Station, Rain Gauge, Wind Speed, Wind Direction \| 7.5" HD Color Display, Indoor Outdoor Temperature & Humidity, Barometric Pressure, Dew Point, Easy Setup, No WiFi](https://best-deals.pro/visit/u-unni-un0581-wireless-indoor-outdoor-thermometer-hygrometer)
- [Newentor Weather Station Wireless Indoor Outdoor Thermometer,Black,1Sensor \| Color Display Digital Weather Thermometer with Atomic Clock, Barometric Pressure, Forecast Station, Adjustable Backlight](https://best-deals.pro/visit/u-unni-un0581-wireless-indoor-outdoor-thermometer-hygrometer)
- [Indoor Outdoor Thermometer Wireless Weather Station Barometer \| 4.5" Color Backlight Display, USB for Always-On Backlight, 0.5°F High Accuracy Thermometer for Home Garage Patio](https://best-deals.pro/visit/u-unni-un0581-wireless-indoor-outdoor-thermometer-hygrometer)
- [Indoor Outdoor Thermometer Hygrometer with Wireless Sensor, 328 ft Range \| Wireless...](https://best-deals.pro/visit/u-unni-un0581-wireless-indoor-outdoor-thermometer-hygrometer)
- [Wireless Weather Station with 3 Outdoor Sensors, 7.5" VA Full-Color Display \| Indoo...](https://best-deals.pro/visit/u-unni-un0581-wireless-indoor-outdoor-thermometer-hygrometer)
- [WiFi Thermometer Hygrometer, Wireless Indoor Outdoor Temperature Humidity Monitor, ...](https://best-deals.pro/visit/u-unni-un0581-wireless-indoor-outdoor-thermometer-hygrometer)

## Add-ons

- [Amazon Basics 20-Pack AA Alkaline Batteries, 1.5 Volt, 10-Year Leak-Free Shelf Life, for Everyday and Household Devices](https://best-deals.pro/visit/u-unni-un0581-wireless-indoor-outdoor-thermometer-hygrometer)

## Images

![U UNNI UN0581 Wireless Indoor-Outdoor Thermometer Hygrometer — 1](https://best-deals.pro/i/Ft_E_aaLjFrWMaK_Z7_djXmaD_nz-8t3rCmIbyDksH2faxquNBBNSyevEzD6iUSlM0tqEtOtTAmMOCTXfmkAjlK7JgA1wZDI5QATyj_ZDN6NhMY2oo7qiSf2.jpg)

![U UNNI UN0581 Wireless Indoor-Outdoor Thermometer Hygrometer — 2](https://best-deals.pro/i/uJjNDPa53ScXBHXBfBR8nuKnTvXa8032scn8x0m0zJlgOcpfZfwVHN1iqqZrds9mU5hu-f5uRcskCuxvq5OO7hjhS9GMIzCRXr3B7GuQ6YsKJj3fz-Merich.jpg)

![U UNNI UN0581 Wireless Indoor-Outdoor Thermometer Hygrometer — 3](https://best-deals.pro/i/iyzkRe0-UoT9UxEHPJNIjyl7FWEzlGUL5t019CoARt-bYgCf9yhlsrB2NU416hzvtQRMbh_Fm5qqq1r038d56pb88L8VFDotrty-XBdf2zZlnSPTxs0vZeR7.jpg)

![U UNNI UN0581 Wireless Indoor-Outdoor Thermometer Hygrometer — 4](https://best-deals.pro/i/q6yEfwQ6jHLW2V0QRShUXI2Tlg27eJx6gxHKoVZ4wkcWMFrdKcX0nfcFLICqDGrOUmarv6KJC69syIcW41JnS6zzKnt4Nhlnn4m-8rdUbF2q3ZB59brQDAJV.jpg)

![U UNNI UN0581 Wireless Indoor-Outdoor Thermometer Hygrometer — 5](https://best-deals.pro/i/k0Ua33uXvy5nyCpUnahRzLfGHXcSVmpg9CKBI3-k5XGveZcB_tBc-A94eqyVZxohwQhivtTOuC45IHfNxBkmtV8CYz5k9a0MfRrXc5yZ7Sosva2oe4fwG_Rk.jpg)

![U UNNI UN0581 Wireless Indoor-Outdoor Thermometer Hygrometer — 6](https://best-deals.pro/i/KRuwfoBA4vqnMBJigFXptXvTBmJ3w6TWtprANMhs-oNKGZmlbDVnJ1ZAL8WR7RlE2XbN0xn7-R7aL2knS08dK2wEYTY6xDUJhZNuMeiP25q_VKjVFYmqs8S5.jpg)