RZ853 Photoelectric Non-contact Anemometer Handheld Speed Measuring Instrument, RZ853

1. Resolution dimension ratio: 0.1 RPM (2.5-999.9 rpm)
2. Basic accuracy: +/-(0.1% n + 5d) rpm
3. Measuring distance: 50-500 mm
4. Sampling rate: 1 times / sec.
5. Test distance: 50-500mm
6. Time base: quartz crystal
7. Automatic shutdown: 61s
8. Maximum, minimum, average;last measured value remains
9. Low Battery Tips; Memory function
10. Power supply: 3 x AAA alkaline battery (Not included)