1、Function: Intelligent recognition of voltage/resistance/Multimeter mode (measuring voltage, resistance, diode, continuity)/Oscilloscope function/Vehicle parts activation/0-5V adjustable power supply/Multiple languages available for selection. Professional circuit diagnostic tools for automobiles/motorcycles. 2、Multimeter Mode: In addition to voltage and resistance measurement, the TopDiag P100 Pro also has a multimeter mode that can measure parameters such as voltage, resistance, diodes, and continuity, providing comprehensive circuit testing functions, quickly test various numerical values of automobiles. 3、Convenient and Fast Testing: No need to disassemble components, it can achieve safe and efficient test. Can effectively achieve on/off and activation testing of various automotive components, automotive components such as light bulbs, motors, ECUs, etc. 4、Oscilloscope Mode\u00260-5V Power Supply: Car Circuit Tester can visually display the voltage, time interval, frequency and other numerical values of circuit components. Sensitive component power activation: 0-5V power supply, adjust the input voltage of the detector, and perform power activation tests on sensitive components. 5、Widely Used: Convenient and fast, supporting the detection of various circuit systems such as cars, trucks, motorcycles, ships, and heavy machinery equipment. Supports multiple languages. Supports test of all 12 24V vehicle electrical systems. 6、Support Multi-languages: English, Espanol, Deutsch, Francais, Italiano, Portugal, Polish, Russian, Vietnamese, Thailand, Indonesian, Filipino, Malay.