[Air Thermometer and Hygrometer] Our air thermometer and hygrometer feature a Swiss-made high-precision sensirion sensor, ensuring exceptional accuracy. The indoor temperature range is +14.2ºF to +122ºF, while the outdoor temperature range is -58º F to +158ºF, and indoor/outdoor humidity range from 1% to 99%. Temperature accuracy is +/-0.5ºF, and humidity accuracy is +/-2% | [Patented Technology] U UNNI has advanced patented wireless technology that allows for more powerful and consistent data transmission. The personal wireless temperature humidity monitor updates and transmits data within a 330 ft radius every 30 seconds, enabling you to monitor all your essential locations with confidence | [Features] Say goodbye to climate concerns! Our wireless hygrometer thermometer gauge provides real-time weather forecasts, indoor and outdoor temperature and humidity readings. The display includes heat index, dew point index, and mold index for all sensor locations. | [Large Clear Display] The compact display is easy to read with bold, black information. With a tabletop or wall-mountable design, you can place it conveniently for quick viewing. Tap the backlit button, and it illuminates for 10 seconds, ensuring readability in the dark. | [Package Information] You receive the weather station with a display screen, an outside sensor, and a one-year warranty (excluding batteries). Support up to 3 sensors; ensure they are in different channels.