Multimeter with PC InterfaceFeatures and Benefits: 58 Test ranges, 16 functions Auto power-off, saves battery Ms pulse width for fuel injector on-time Minimum / Maximum function captures high/low readings for better diagnostic capability RS-232 PC interface This is a premier automotive diagnostic tool. It's equipped with the latest testing capabilities, including milliseconds pulse width, for measuring the on-time of fuel injectors. This features a huge LCD display w/bar-graph for easy viewing. It also can be interfaced to your PC or notebook computer for enhanced diagnostics and data presentation. The software and computer interface cable are included. This set includes two sets of test leads, RPM pick-up, temperature probe, software CD, interface cable, protective holster, 9 volt battery, instruction manual and hard storage case. Inductive RPM pick-up features a five position adjustable sensitivity switch.Test functions: AC/DC Volts ms-Period AC/DC Amps ms-Pulse Width Ohms Temperature Capacitance Diode test Frequency Continuity Duty cycle WARNING: This product can expose you to chemicals, including Lead and Di(2-ethylhexyl) phthalate (DEHP), known to the state of California to cause cancer or birth defects or other reproductive harm. For more information, vist - www.P65Warnings.ca.gov