DT2856,2858 type photoelectric contact tachometerDetailed product description：

DT2856, 2858 type photoelectric contact tachometer

Laser/contact tachometer
Model: DT-2856
measurement range
Speed: 2.5-99999 revolutions per minute (laser)
0.5-19999 revolutions per minute (contact)
Laser measurement distance: 50-200mm, up to a maximum of 2 meters
Accuracy: ± (0.05% n+1d)
Resolution: 0.01/0.1/1
Memory value: maximum/minimum/last value
Power supply: 4 No. 5 batteries
Dimensions: 215x74x32mm
Weight (excluding battery): 171g
Applications: Manufacturing industries such as motors, fans, papermaking, plastics, synthetic fibers, washing machines, automobiles, airplanes, ships, etc