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

Features:
Indoor / outdoor temperature, indoor humidity display.
°C / °F temperature switch display, comfort display.
Indoor and outdoor maximum and minimum temperature memory function.
Memorized MAX/MIN indoor temperature and humidity value automatically.
With back stand and magnetic stick 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~+70 Centigrade (-58 Fahrenheit ~ +194 Fahrenheit )
Indoor Humidity: 20%RH~90%RH
Use battery: 1 * 1.5V (AAA) battery(Not included)
Sensor cable length: Approx. 90cm / 35.4in
Product size: 70 * 81 * 20mm / 2.8 * 3.2 * 0.8in
Product weight: 66g / 2.32oz
Package size: 12.4 * 12 * 2.1cm / 4.9 * 4.7 * 0.9in
Package weight: 84g / 2.92oz
Package List:
1 * Digital LCD Thermometer Hygrometer
1 * User Manual(English)