* Description: digital thermo hygrometer
* Application: digital thermometer, room thermometer, indoor outdoor thermometer, thermo hygrometer
* Display Indoor temperaturer and humidity,Outdoor temperature;
* Record the maximum and minimum temperature and humidity;
* Deg °C and deg °F switch;                             
* Temperature measure range: 
   Indoor:-10~+50°C(+14~+122°F)
   Outdoor:-50~+70°C(-58~+158°F)
* Humidity measure range:20~99%RH;     
* Accuracy: +/-1°C,+/-5%RH;
* 1.5V operate(AAA);