PS100PRO Automotive Circuit Tester & Short Finder – 12V/24V Power Circuit Probe Kit, AC/DC Voltage Tester, Current Probe, Component Activation Tool, 40FT Total Cable Length

The PS100PRO Automotive Circuit Tester and Short Finder is an all-in-one diagnostic tool designed to meet the full range of 12V and 24V vehicle electrical system testing needs. Integrating eight core functions—including voltage testing, component activation, positive/negative terminal identification, current waveform testing, resistance testing, diode testing, continuity testing, and frequency testing—this versatile device eliminates the need for multiple tools. Whether you are checking battery voltage, activating components such as starters, fuel pumps, or headlights, or troubleshooting circuit continuity and measuring resistance or frequency, the PS100PRO delivers reliable performance across all automotive maintenance and repair scenarios. Designed for flexibility and convenience, the unit supports two power supply methods: direct connection to an external or vehicle battery, or via the cigarette lighter socket to prevent power interruptions. With a 6-meter main test cable and an additional 6-meter extension cable, it provides extended reach to access hard-to-reach areas such as deep engine compartments or undercarriages without the need to constantly reposition the vehicle or the tester, significantly improving testing efficiency. Safety is built in with overload protection and reverse connection protection. If the activation current exceeds 8A, the device automatically trips and can be reset by restarting, while reverse polarity protection prevents damage from incorrect battery terminal connections. This dual safety design reduces operational risks, making the tool suitable even for beginners. The 1.8-inch TFT color screen clearly displays key readings such as voltage, resistance, frequency, and duty cycle, with real-time maximum/minimum value tracking. Audible and visual indicators—including a buzzer and dual-color red/green LEDs—provide instant feedback: a red LED and buzzer indicate positive terminal detection, while a continuous beep with a red LED signals circuit continuity. An integrated LED light ensures visibility in dark working environments. User-friendly controls include a toggle switch that allows single-click interface navigation and test activation, double-click to lock the current display for easy data comparison, and long-press to rotate the screen 180° for optimal viewing angles. A “Do not test under power” prompt appears before resistance testing to guide proper operation. With support for 12 languages, the device is accessible to users worldwide and requires minimal learning time. With a wide input voltage range of 8V to 32V and a testing range of 0V to 80V, the PS100PRO is compatible with both 12V passenger vehicles and 24V trucks or construction equipment. Operating at just 80mA, it is energy-efficient while maintaining stable performance under common automotive repair conditions, including high/low temperatures and vibration. Built from high-quality materials and rigorously tested, it is engineered for long-term reliability.