Magnetic (1-99,999 RPM) Self-powered gear sensor.

M-190W or M-190P: Most popular sensor for use
with 60 tooth 20 pitch gears. Sensor mounts within
0.005 inches (0.127 mm) of a minimum 0.1 inch
(2.5 mm) target. Requires no power from the
display module and self-generates an AC signal.
Common usage: Ferrous metals, primarily gear
teeth.
Operating 0.005 (0.127 mm) gap with
Distance 0.1 target (2.5mm) min.
Speed Range 1-99,999 RPM
Operating -100