Stroboscope

Measure range: 60~39,999RPM

Coarse/Fine adjust amplitude:

　 <1,000RPM Coarse adjust: ±10RPM

　　　　　　　Fine adjust: ±0.1RPM

　 ≥1,000RPM Coarse adjust:±100RPM

　　　　　　　Fine adjust: ±1RPM

Accuracy: ±0.05%

Resolution: <1,000RPM: 0.1RPM

　　　　　≥1,000RPM: 1RPM

10 commonly functions for rotational speed storage, improves the 

efficiency of measurement.The intensity of flashlight is increased 

100% than DT2239B.

Battery: 4x1.5V AA battery