Clock function and alarming function
12/24 hour mode switch
8 minutes snooze function
Recovery function on the Max./Min.                 
Power supply: one 7# alkaline battery                                        
Measure and display the indoor/outdoor temperature and indoor humidity
Automatically memorize the Max./Min. values of the indoor/ outdoor temperature and indoor humidity
Switch between°C / °F

values Indoor temperature measuring range:                            
-30°C-+50°C(-22°F-122°F)
Outdoor temperature measuring range:                                   
-50°C-+70°C(-58°F～158°F)
Indoor humidity measuring range: 20%-99% (Relative humidity)
Resolution: Temperature:0.1C;                                                                                                                                                          Humidity: 1% RH                                
Operation environment: Temperature:0°C-50°C;             
Humidity: 5%-85% RH