Fangrui Product Details [voltage And Charging Functions]voltmeter Function,and Battery Level Indicator ,crangking System Test ,analyze The State Of The Cranking System, Display The Cranking Voltage,and The Cranking Time,graphs The Waveform Of The Cranking System,charging System Test,analyze The State Of The Charging System,display The Ripple.unload And Load Voltage,graphs The Waveform Of The Ripple Test Etc. [professional Checking Car Engine Tool]displays Definitions On Unit Screen,views Freeze Frame Data,displays Monitor And Readiness Status (emissions),identifies Pending Codes,read Live Pcm Datastream,displays Live 02 Sensor . [wide Compatibility]works On All 1996 And Later Obdii Compliant Us, European And Asian Vehicles,graphs Data (1996 And Newer) Easily Determines The Cause Of The Check Engine Light() Retrieves Generic (po, P2, P3,and U0) And Manufacturer Specific (p1, P3, And U1) Codes Turns Off Check Engine Light(), Clears Codes And Resets Monitors.supports Can (controller Area Network) And All Other Current. [storing Da