U UNNI UN0581 Wireless Thermometer Hygrometer 330ft Range

Indoor & outdoor climate monitor

The U UNNI UN0581 is a wireless thermometer and hygrometer built for home owners who want simultaneous indoor and outdoor readings. It uses a Swiss-made Sensirion sensor to deliver temperature accuracy within ±0.5 °F and humidity accuracy within ±2 %. The system supports up to three remote sensors on separate channels, making it suitable for monitoring a house, a greenhouse, a garage or a chicken coop from one display.

Continuous 330 ft transmission

Patented wireless technology keeps the signal stable across a 330 ft radius and refreshes data every 30 seconds so you see sustained trends rather than momentary spikes. The display calculates heat index, dew point and mold index for each sensor location in real time. A backlight button illuminates the screen for 10 seconds, allowing quick checks in darkness without a permanent glow.

Verify sensor placement and power needs

Before ordering, confirm that each remote location sits within the 330 ft open-air range and that walls or metal structures will not block the signal. The main unit and sensor both run on user-supplied batteries, so plan for periodic replacements. The display measures 145 mm square and can sit on a tabletop or mount on a wall for flexible positioning.