42 test ranges, 12 functions. Dual display with analog bargraphs and large LCD digital display . Built in temperature readings . RPM pick up and temperature probe included. 10 Meg/Ohm input impedance This is a professional grade tool used for diagnosing electrical, computer and engine problems on any vehicle. It includes two sets of test leads, RPM pick up, temperature probe, protective holster, 9 volt battery, instructions manual and carrying case. Inductive RPM pick-up features a five position, adjustable sensitivity switch.