About this item Indoor & Outdoor Monitoring - the digital thermometer hygrometer measures indoor and outdoor temperature & humidity values real-timely provides daily health care aid for you and your family Strong Wireless Signal - the hygrometer thermometer is attached with 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 quickly 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 just 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 60s automatically Portable & Convenient - easy to switch temperature units to Celsius or Fahrenheit via the button at the top Its layout is sleek and compact which is widely applied to baby room bedroom home nursery hatchery cellar basement warehouse and greenhouse.