About this item Indoor & Outdoor Monitoring - the digital thermometer hygrometer measures indoor and outdoor temperature & humidity values in real time, providing daily health care assistance for you and your family. Strong Wireless Signal - the hygrometer thermometer is attached with a wireless transmitter that features strong wireless signal penetration (433MHz frequency) and long transmission distance (30-100m/98-328ft in open air); the signal can be received timely and reliably within the transmission range. 2 Mounting Options - designed with wall hanger and retractable stand at the back, easy to mount it on wall effortlessly or place it on the table. Accurate Readings & Visualized LCD - large LCD screen for easy and clear readings; indoor temperature range: 0-60C / 32-140F; outdoor temperature range: -40C - 60C / -40F - 140F; humidity range: 10%-99%; accuracy: 1C / 5%; refresh data every 60 seconds automatically. Portable & Convenient - easy to switch temperature units between Celsius or Fahrenheit via the button at the top. Its layout is sleek and compact which is widely applied to baby rooms, bedrooms, homes, nurseries, cellars, basements, warehouses, and greenhouses.