Digital Thermometer Hygrometer, Indoor/Outdoor Humidity Meter, Temperature Monitor with Wireless Sensor, 328ft/100m Range, C/F Selectable, 60s Auto Refresh for Home, Office, Greenhouse Descriptions Indoor & Outdoor MonitoringThe digital thermometer hygrometer measures indoor and outdoor temperature & humidity values real-timely, which provides daily care aid for you and your family. Ultra Long Transmission RangeAttached with wireless transmitter, this hygrometer thermometer 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. Accurate ReadingsLarge LCD screen is easy to read clearly. The indoor temperature range is 0-60C/32-140F. Outdoor temperature range is -40F-60C/-40F-140F. Humidity range is 10%-99%. And accuracy can reach to 1C/5%. Data will update every 60s automatically, but the sensor needs about 30mins to be stabilized). Portable & ConvenientEasy to switch temperature units to C or F via the button at the top. Please note that switch C /F unit first (the default is C) before installing batteries for the device. Powered by 2*AAA batteries (transmitter/receiver, not included). Widely ApplicationDesigned with wall hanger and retractable stand at the back, the thermometer humidity monitor is easy to mount it on wall effortlessly or just place it on the table. Its layout is sleek and compact, which is widely applied to baby room, bedroom, home, nursery, hatchery cellar, basement, warehouse and greenhouse. Package included: 1 * Digital Thermometer 1 * Wireless Transmitter 1 * User Manual