This unit has many of the necessary features required for today's automotive diagnostics. Use frequency readings to test crankshaft and camshaft sensors. It comes equipped with an rpm pick-up, probe test leads, alligator clip test leads, instructions and installed 9V battery. Inductive rpm pick-up features a 5-position, adjustable sensitivity switch. Features: (25) test ranges (9) test functions Easy rpm readings Inductive rpm pick-up included 10 Meg/Ohm input impedance Dual fuse protection Built-in tilt stand