Feature: 1. Adopts photoelectric technology, anti interference technology and other advanced technology to realize non‑contact speed measurement, and to detect the state of moving object and surface defects. 2. With large LCD backlight display screen, convenient to read data in the dark. 3. The measurement range is sixty‑ forty thousand RPM, with fine and coarse adjust, easy to measure. 4. Digital control adjustment flash frequency, low power consumption, with speed storage, improves the efficiency of measurement. 5. Handheld and non‑contact measurement, portable and safety. 6. Wide range of applications,such as all kinds of rotor,motor,fan,gear joggle,tremor equipment diagnose etc. Specification: Condition: 100% Brand New Item Type: Stroboscope Tachometer Material: Plastic Color: As shown in the picture Measuring Range: Sixty‑ forty thousand RPM RPM:R / min Coarse Tuning/Fine Tuning<1000RPM: Coarse Tuning: 10RPM Fine Tuning: 0.1RPM Coarse Tuning/Fine Tuning≥1000RPM: Coarse Tuning: 100RPM Fine Tuning: 1RPM Accuracy: 0.05％ Resolution: <1000RPM: 0.1RPM ≥1000RPM: 1RPM Time Base: 10MHz quartz oscillator Display: 5 digit LCD display with backlight Maximum Display: Forty thousand Power Supply:4 x 1.5V AA battery(UM-3) (Not included) Power Loss: About 60mA . Package List: 1 x Stroboscope Tachometer(Battery Not Included)1 x Instruction Manual Note: 1. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.