Product Name: Digital LCD Non-Contact Flash Stroboscope Tachometer Photoelectric Revolution Meter Speedometer Tester 60~49999rpm Model NO.: DT50D Shakeproof: Shakeproof Anti-jamming: Anti-jamming Pressure Resistance: With Pressure Resistance Connection Type: Wireless Detection Method: Non-contact Display: Digital Trademark: hongchang Origin: Shenzhen, China Product Description Digital LCD Non-Contact Flash Stroboscope Tachometer Photoelectric Revolution Meter Speedometer Tester 60~49999RPM (DT50D)Description:A new LED light source flickering in certain frequency is usedin this instrument. When it is used to observe an object which is rotating or moving in high speed, it can have similar or the same speed by adjusting the flicking frequency of LED light. Although the object is moving in high speed, it seems to move slowly or still, so that the surface quality or running state of the object which is rotating or moving in high speed can be inspected.Features:1. High precision 0.001%2. Adjustable stroboscopic brightness and frequency indication support3. Adopted American original led lamp beads, with high brightness and long operating life4. Matrix structure lamp base with 16 beads, to obtain much farther light rangeSpecification:1. Measure range: 60~49999 RPM2. Accuracy: 0.001%3. IIIuminance: 750LUX4. Display: LCD display5. Power by 7.4V/1100mA lithium battery , working<0.2W, continuous working of 8hours and standby of 3momths6.Opearting temperature: -10ºC~55ºC7.Size: 210*90*57mm8: Weight: 320g(battery included)