※Basic Character:                       
·single file LCD display         ·Operating voltage:1.5V(AA)
·Deg ℃/℉ swithcable            ·Measuring temperature range:
·Max/Min temperature  records           indoor:-20℃～70℃
·In/Outdoor temperature measure         outdoor: -50℃～70℃
·Display resolution:0.1℃；      ·Accuracy:±1 ℃
·Display (LCD) Size:38.5*15.5mm
.Use of the environment:-10~+50C
·Outdoor Temperature sensor length:2m
  ※Key Function:
  ·MAX/MIN:display the max/min temperature in memory/memory cancellation
  ·IN/OUT:switch indoor or outdoor temperature display
  ·C/F:switch ℃/℉ temperature display
   ※Clear the momery:
  Hold `MAX/MIN`key for 2s to cancel its max/min temperature