Item No.: C11B050
.5-digital LCD with  Back Light.  
.Measuring Range:  2.5~99999 rpm.  
.Resolution: 0.1 rpm (2.5~999.9 rpm),1 rpm (1000~99999 rpm).  
.Accuracy: ±(0.1%n+5d)rpm;(2.5~999.9rpm).                            
.±(1%n+5d)rpm;(1000~99999rpm).  
.Laser Power: CLASSⅡ 2-5mW.  
.Sampling Rate: 1 time / second.  
.Measuring Distance: 50-500mm.  
.Time Base: Quartz Crystal.  
.MAX., MIN., AVG. and LAST Value.  
.Operating Environment: 0~50℃;32~122℉;10%~90%RH.  
.Storage Environment: -10~80℃;-14~176℉;10%~75%RH.  
.Auto Power Off: One Minute Without Any Operation.  
.Memory function.  
.Low Battery Indication.  
.Power：2*1.5V AAA Batteries.  
.Weight：106g  
.Dimension：55.7*29.9*127mm.