1、360 degree digital
   measure range
2、Display always reads    upright, no matter which    way the level is turned
2、Alternative reference    (zero)
3、Readout holding
4、Degree/Slope,  Absolute    measurement /Relative
   measurement conversion
5、One measuring plane:The    bottom is stainless    steel plane and have a    screw in the center.
6、One thumb screw: install    the module to your frame    by screwing the thumb    screw on the bottom.

Range：  
   4¡Á65288;0～360¡ã5289;；
Work temperature：  
   +5℃～+40℃；
Work humidity：  
   ≤85％RH
Resolution：
   0.1¡ã5307;
Accuracy：  
   0¡ã 90¡ã804;0.1¡ã5292;
   the rest≤0.2¡ã5307;
Power：  
   3V（1.5v¡Á65289;lithium    battery；