LCD Digital Thermometer Hygrometer Temperature diagnostic-tool Humidity Meter weather station tester w/ Wired External Sensor

Features:
Indoor / outdoor temperature, indoor humidity display.
°C / °F temperature switch display, comfort display.
Memorized MAX/MIN indoor temperature and humidity value automatically.
With back stand at back side, convenient to place.
With a wired external sensor that can be strung to the outside of your house to sense external temperature as well as a built-in sensor to simultaneously measure the indoor temperature.
Specifications:
Indoor temperature: -10 Centigrade~+50 Centigrade (+14 Fahrenheit ~+122 Fahrenheit)
Outdoor temperature: -50 Centigrade~+90 Centigrade (-58 Fahrenheit~+194 Fahrenheit)
Indoor Humidity: 20%RH~99%RH
Use battery: 1 * 1.5V (AAA) battery(Not included)
Product size: 98 * 58 * 14mm / 3.9 * 2.3* 0.6in
Product weight: 46g / 1.62oz
Package size: 14.6 * 10.8 * 1.6cm / 5.7 * 4.3 * 0.7in
Package weight: 74g / 2.6oz
Package List:
1 * Digital LCD Thermometer Hygrometer
1 * 1-meter- long Wired External Sensor
1 * User Manual(English)