* Description: digital thermometer
* Application: digital thermometer, room thermometer, indoor outdoor thermometer
* Single file LCD display
* Operating voltage:1.5V(AA)
* Deg °C/°F swithcable
* Measuring temperature range:
* Max/Min temperature  records
* Indoor:-20°C~70°C
* In/Outdoor temperature measure
* Outdoor: -50°C~70°C
* Display resolution:0.1°C
* Accuracy:±1 °C
* Display (LCD) Size:38.5*15.5mm
* Outdoor Temperature sensor length:2m
* MAX/MIN:display the max/min temperature in memory/memory cancellation
* IN/OUT:switch indoor or outdoor temperature display
* C/F:switch °C/°F temperature display
* Clear the momery: hold `MAX/MIN`key for 2s to cancel its max/min temperature