JJ-102B Revolution Counter of motor mechanical contact with the outside mechanical equipment (gearDailun.Steel axle, etc.) for special hardware or stopped recording equipment or the frequency of rotation, widely used for a variety of equipment to monitor and record keeping to the number, a count accurate.reliable.user-friendly.retrieval of visual and other advantages.for small machinery, transportation packaging.printing equipment Technical parameters:Digital specification mm:4X2 height X width 4X2 MAX Calculated Capacity 00000--99999 Transmission Ratio 1:1 Enviromental Temperature -20----65Calculating speed 20G Reset mode no