*Display Indoor temperaturer and humidity,Outdoor temperature;
*Record the maximum and mini-mum temperature and humidity;
*Deg C and deg F switch;
*Freeze from -1C to +4C;
*Temperature measure range:
Indoor:-10~+50C(+14~+122F)
Outdoor:-50~+70C(-58~+158F)
*Humidity measure range:20~99%RH;
*Accuracy: +/-1C,+/-5%RH;
*Time and alarm *Use of the environment:-10~+50C
*1.5V operate(AAA);
