U UNNI Indoor Outdoor Thermometer Wireless Hygrometer — 4.5-inch Backlit Display with 3 Remote Sensors and Long-Range Monitoring

The U UNNI Indoor Outdoor Thermometer is a wireless digital hygrometer with a 4.5-inch backlit display and three remote sensors for continuous temperature and humidity monitoring.

Whether you need to track greenhouse conditions, monitor rooms, or keep an eye on an entryway and backyard simultaneously, this compact weather station delivers easy-to-read data and reliable wireless ranges. It combines a bold 4.5-inch LCD, adjustable backlight, and a trio of outdoor sensors that transmit up to 328 ft/100 m, so you can view indoor and outdoor climate numbers and trends from one central display.

How accurate are the temperature and humidity readings?

The device ships with pre-calibrated sensors that offer dependable daily readings for both temperature and humidity. The indoor temperature range is 14.2°F to 122°F and outdoor range is -40°F to 158°F; humidity measures between 20% and 95% with stated accuracies.

• Temperature accuracy: ±2°F
• Humidity accuracy: ±5%
• Indoor temperature: 14.2°F–122°F; outdoor: -40°F–158°F
• Humidity range: 20%–95%

How does the wireless connection and sensor setup work?

U UNNI uses a patented wireless system that refreshes readings approximately every 30 seconds and maintains a transmission radius up to 328 ft/100 m in open conditions. You get one main display unit and three remote sensors that are pre-paired or simple to sync, allowing simultaneous monitoring of multiple locations.

• Updates every ~30 seconds for near real-time monitoring
• Transmission range up to 328 ft/100 m in open air
• Supports three outdoor sensors for multi-location data
• Simple pairing process and steady signal with patented tech

What useful features help daily use and alerts?

The display shows current values plus trend indicators, daily max/min records, and comfort status so you can quickly assess conditions. It also offers switchable Celsius/Fahrenheit, low-battery warnings, and configurable outdoor alerts to notify you when readings cross set thresholds.

• Comfort indicator for quick climate assessment
• Daily MAX/MIN auto-reset every 24 hours
• Switchable °C/°F and trend arrows for rising/falling readings
• Outdoor temperature & humidity alert and low-battery icon

How is the display powered and mounted for different rooms?

The main display supports USB power for continuous backlight and three brightness levels (high, low, off), or it can run on batteries for portable use. The unit’s design allows tabletop placement or wall mounting so it fits kitchens, living rooms, basements, garages, or office walls without taking much space.

• USB-powered to keep backlight on, plus battery backup option
• Adjustable backlight: high / low / off
• Tabletop stand or wall-mountable housing for flexible placement
• Compact 4.5-inch display with bold, easy-to-read digits

Who is this for? If you want a straightforward, multi-sensor weather station to watch indoor and outdoor temperature and humidity at once, the U UNNI wireless thermometer is geared toward hobby gardeners, pet owners, families monitoring home comfort, and anyone managing multiple locations like greenhouses, garages, or porches. It’s also useful for renters and homeowners who prefer a plug-in option with battery backup and clear visual alerts rather than a smartphone-dependent solution. The package includes the main display, three outdoor sensors, a USB cable, and a one-year warranty (batteries not included).