[P100 Pro Circuit Tester] The P100 Pro is an intelligent automotive circuit tester designed for testing voltage, resistance, and detecting faults in vehicle electrical circuits. Upgradeable and user-friendly, it helps you efficiently diagnose and troubleshoot your car.

[Oscilloscope Function] The oscilloscope function of this probe tester displays accurate electrical waveforms on the screen, allowing you to analyze AC/DC signal voltage, detect voltage fluctuations, and identify connection issues. It also features a built-in LED light for working in low-light conditions.

[Multimeter Mode] Our multifunctional automotive power circuit probe tester serves as an essential tool for every vehicle owner. With quick and precise measurements of voltage, resistance, diode, frequency, and continuity, it greatly simplifies automotive circuit diagnosis.

[Component Activation] Easily connect the power circuit probe tester to your vehicle battery and test the functionality of various components like starters, windshield wipers, or air conditioning system. Ensure that everything is working properly.

[Free Online Upgrade] Enjoy free online upgrades for our automotive diagnostic tool. We continuously improve the functionality of the car circuit tester based on user feedback and latest car specifications, providing you with a smooth and enhanced diagnostic experience.

[0-5V Power Supply] P100 Pro car diagnostic tool has a 0-5v power supply function that other common circuit test tools do not have. When the circuit connected to the probe tip forces the voltage above or below the set point voltage of 0.5 volts, the device will sound an alarm to know that the output voltage is different from 0 to 5V(current＜100mA) in 0.5 volt increments.