AT-9955
Automotive Digital Multimeter

RPM measurement for automotive engines with 2 to 10 Cylinders using the inductive Pick-up.
Oversized high contrast 4000 counts LCD display with backlight
14 Functions including DCV, ACV, DCA, ACA, Resistance, RPM (Tach), Dwell angle, Duty cycle, Frequency, Temperature (IR Temperature) (ºC/ºF), Capacitance, Continuity and Diode Check
Read pulse duty cycle and dwell angle for electronic fuel injection feedback carburetors, and ignition
Data Hold and Relative functions.
Over-range indication
Auto Power Off.
Fused current inputs and Overload protection on all ranges.
Measures Milliseconds pulse width to test on-time of fuel injectors, idle air control motors, and electronic transmission controls.