Measurement method:Non-contact (Laser) Photoelectric Working Current:40mA 1. Measurement range: 10-99999RPM 2. Digital non-contact tachometer for measuring the speed of motors and other machines. The device is capable of displaying the results in RPM or revolutions. The portable device is capable of safely measuring a rotating object by a non-invasive method. 3. Features: automatic range, speed measurement and speed counting, single trigger / laser indication, low battery / automatic power off indication, LCD backlight, etc. 4. Battery: 3 1.5V AA batteries (not included), battery life is about 40 hours 5. Resolution: (10-9999.9) 0.1RPM, (10000RPM or more) 1RPM 6. Measuring distance: 50mm-200mm 7. Product size: 12x5.3x2.8 cm
