Thinkcar ACT20 Automotive Circuit Tester – 12V/24V Power Probe, Electrical System & Component Tester
Designed for 12V and 24V automotive electrical systems, the ACT20 combines voltage, current, and resistance measurement with polarity testing, continuity testing, ground testing, short-circuit troubleshooting, and direct component activation. Technicians can quickly identify positive, negative, and open circuits, check questionable grounds, test switches, relays and diodes, and apply power or ground directly through the probe to activate supported electrical components. A built-in 1.77-inch display provides easy-to-read measurements, while an integrated flashlight helps illuminate dark engine compartments, fuse panels, dashboards, and other difficult-to-see areas.
Key Features
- Complete Automotive Electrical Testing – Test voltage, current, resistance, polarity, continuity, grounds, and other common automotive electrical conditions from one handheld tool.
- 12V & 24V Vehicle Support – Designed for electrical troubleshooting across a wide range of compatible passenger and commercial vehicle applications.
- Direct Component Activation – Apply power or ground directly through the probe to activate supported components such as motors, relays, lights, and other electrical devices.
- Quick Polarity & Circuit Identification – Instantly identify positive, negative, and open circuits to speed up electrical troubleshooting.
- Up to 36V Measurement Range – Provides the measurement range needed for common automotive 12V and 24V electrical diagnostic applications.
- 19.7-Foot Extended Reach – Extra-long 6-meter cable provides excellent access when testing electrical systems from the front to the rear of the vehicle.
- Built-In Flashlight: The integrated flashlight illuminates the test area when working underneath dashboards, around fuse boxes, inside engine compartments, or in other poorly lit areas.
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