Automotive Circuit Tester 6-24V | LED & Buzzer Alerts

Automotive Circuit Tester – 6 to 24V | LED Display & Buzzer Notification

Keep your vehicle's electrical system running safely with this multifunctional Automotive Circuit Tester. Designed for DIY mechanics and professional auto technicians alike, this durable green tester works across a wide 6–24V voltage range, making it compatible with cars, trucks, motorcycles, boats, and more. Get instant visual and audible feedback so you can pinpoint wiring faults, test fuses, check power circuits, and diagnose electrical issues with confidence.

⚠️ This product is an automotive diagnostic tool and is not intended to diagnose, treat, cure, or prevent any disease or medical condition. This statement has not been evaluated by the Food and Drug Administration.

Key Features

• Wide Voltage Range (6–24V): Compatible with 6V, 12V, and 24V vehicle electrical systems — perfect for cars, SUVs, trucks, RVs, and marine vessels.
• LED Display: Bright, easy-to-read LED indicator provides instant visual confirmation of circuit status, even in low-light conditions.
• Buzzer Notification: Audible buzzer alerts you the moment a live circuit or fault is detected — no need to keep your eyes on the tool.
• Multifunctional Design: Tests for voltage, continuity, grounds, shorts, and open circuits — all in one compact tool.
• Durable Construction: Built to withstand the demands of garage and roadside use, with a robust housing that resists impact and wear.
• Easy to Use: Simply connect the ground clip and probe the circuit — the LED and buzzer do the rest. No technical expertise required.
• Compact & Portable: Lightweight design fits easily in your glovebox, toolbox, or toolkit for on-the-go diagnostics.

Specifications

• Voltage Range: 6V – 24V DC
• Indicators: LED Display + Audible Buzzer
• Battery: Not required (powered by vehicle circuit)
• Color: Green
• Country of Origin: Made in Mainland China

Who Is This For?

Whether you're a weekend DIYer troubleshooting a blown fuse or a seasoned mechanic diagnosing complex wiring harnesses, this circuit tester is an essential addition to your auto electrical toolkit. It's also ideal for boat owners, RV enthusiasts, and anyone who works with 6–24V DC electrical systems.

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• Automotive Cables & Jump Starters
• Smart Relay Switch – 16A App & Voice Control

For more information on automotive electrical systems and safe diagnostics, visit the National Highway Traffic Safety Administration or learn about electrical safety from CDC NIOSH – Electrical Safety.

Frequently Asked Questions

Q: What voltage systems is this automotive circuit tester compatible with?

A: This circuit tester supports a wide range of DC voltage systems from 6V to 24V, making it compatible with standard 6V classic vehicles, 12V cars and motorcycles, and 24V trucks or commercial vehicles.

Q: Does the automotive circuit tester require batteries to operate?

A: No batteries are required. The tester draws power directly from the vehicle's electrical circuit being tested, so it's always ready to use without any setup.

Q: What can I test with this multifunctional circuit tester?

A: You can test for live voltage, circuit continuity, short circuits, open circuits, and ground connections — making it a versatile all-in-one tool for automotive electrical diagnostics.

Q: How do the LED and buzzer notifications work?

A: When the probe touches a live or faulty circuit, the LED indicator lights up and the built-in buzzer emits an audible alert simultaneously, giving you both visual and sound-based confirmation of circuit status without having to look away from your work.