Specification:
- Lowest cost tachometer in the market
- Two ways to power on/off
- Safe and easy to get rotation speed
- Non-contact measurement by red LED beam
- Contact rotating object via convex or concave contact tips
- Auto power off in 20mins inactivity
- Hold function freezes current reading
- Four rotation speed units are selectable in contact mode:
- rpm, m/min, ft/min, yd/min.
- Sleep mode can be disabled
- Low battery icon indicates weak power
