Gtrsiow Automotive Circuit Fault Probe Tester — Portable 20A/48V with LED Front Lighting

Overview

Meet the Gtrsiow Automotive Circuit Fault Probe Tester—a portable, high-precision tool designed to diagnose vehicle circuits on the go. Built from rugged ABS/PC with a non-slip rubber coating, it stays secure in hand and comfortable during extended diagnostics. The integrated LED front light brightens the work area, helping you spot connections and fuse locations clearly even in dim engine bays.

Rugged Build and Real-Time Readouts

Designed for reliability in real-world conditions, the chassis combines durability with a secure grip, so you can work steadily in cramped spaces or on service ramps. Real-time current readings provide immediate feedback to support informed troubleshooting, while the LED front light ensures visibility in low-light environments.

• Rugged, non-slip ABS/PC housing with rubber coating for a secure grip
• High-precision, real-time current measurements up to 20A/48V
• Built-in LED headlight to illuminate the work area

Versatile for Passenger and Commercial Vehicles

Whether servicing a family sedan or a fleet truck, this tester covers a wide range of circuit checks. It is designed for practical use in both personal and professional settings, helping you verify circuit protection devices and observe connector behavior across vehicle types.

• Suitable for passenger cars and commercial vehicles
• Supports common circuit testing tasks and fuse blade checks
• Max load rating of 20A/48V for safe operation

Portable, Lightweight and Easy to Use

With its compact profile, the tester travels easily between vehicles or fits in a workshop bag for mobile diagnostics. Operation is straightforward: remove the blade fuse, remove the vehicle fuse, plug the tester into the harness, ensure the protection device is in place, then insert into the vehicle fuse socket.

• Lightweight and compact for on-the-go diagnostics
• Clear, step-by-step use flow for quick setup
• LED display provides intuitive readouts during testing

Real-World Scenarios and Benefits

In daily shop use or roadside checks, this tool can help you gain visibility into whether a circuit is delivering power, where a connection might be loose, or if a protective device is functioning as intended. It supports safe, controlled investigation without bulky equipment.

Safety, Care and Expectations

Follow all safety guidelines for electrical testing, work in a well-ventilated area, and never bypass safety procedures. The tester offers informative readings and practical lighting, but it does not replace comprehensive diagnostics or professional expertise.