with big LCD display.
Measure and display the indoor/outdoor temperature and indoor humidity
Automatically memorize the Max./Min. values of temperature and humidity
Switch between C/F
Clock function
12/24 hour mode switch
Recovery function on the Max./Min. values     
Indoor temperature measuring range: 0°C ~ +50°C(32F∼122F)
Outdoor temperature measuring range: -50°C+70°C(-58F∼158F)
Indoor humidity measuring range: 20%∼99% (Relative humidity)
Resolution: Temperature:0.1; Humidity: 1% RH
Power supply: one 7# alkaline battery
Operation environment: Temperature:0-50C; Humidity: 5%-85% RH.