1.       Clock and measurement of temperature&humidity;

2.       Temperature measuring range:indoor:-20C~70C outdoor:-50C~70C(-58F+158F)

3.       Temperature measuring precision:-/+1C

4.       Humidity measuring range:20%-90%RH

5.       Humidity measuring precision:-/+3%RH(50%-80%RH);-/+5%RH(<50%RH or >80%RH);

6.       Record of max&min .indoor/outdoor temperature and humidity;

7.       LCD viewing size:39*15.5mm;

8.       Use one 1.5 Volt AA battery

9.   Freeze alert range:-1C~4C