Accurate readings
Measure DC voltage from 3.5V to 36V with ±2% accuracy for reliable diagnostics every time.
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- 14-day easy returns
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- Quality guaranteed
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Why customers love it
Diagnose car electrical faults fast and confidently
This professional-grade automotive circuit tester brings lab-like precision to your garage, helping you trace shorts, check continuity, and verify polarity across 12V and 24V vehicle systems.
- Clear digital voltage display with ±2% accuracy
- Built-in buzzer and LED light for audible and visual alerts
- Overload protection cuts power when current exceeds 8A
- Long 4.5-meter cable reaches from front to rear
- Works on 12V or 24V systems directly from the battery
- Test continuity, polarity, ground contacts, and trace shorts
Why you'll love this circuit tester
See and hear alerts
Built-in buzzer and LED light provide audible and visual alerts, ideal for dim or dark workspaces.
Protected from overload
Integrated overload protection automatically cuts power when current exceeds 8A, safeguarding both you and your vehicle.
Reach every connection
With a long 4.5-meter cable, you can easily test from the front to the rear of the vehicle without repositioning.
Setup
Simple to use
No electrician, no wiring, no fuss.
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Connect to battery
Power the tester directly from the vehicle battery so it works on both 12V and 24V systems.
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Probe the circuit
Use the probe tip to test for continuity, voltage polarity, ground contacts, and trace short circuits.
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Read the results
Check the clear digital voltage display, LED light, and buzzer for instant, accurate diagnostics.
Specs
The details that matter
Built to last outdoors, season after season.
- Voltage range
- 6V-48V
- DC voltage measurement
- 3.5V-36V
- Accuracy
- ±2%
- Cable length
- 4.5m (14.76ft)
- Housing material
- ABS plastic
- Overload protection
- Cuts power above 8A
Our worry-free shopping promise
If your order arrives damaged, defective, or not as described, contact us within 14 days and we will make it right with a replacement or refund.
Frequently asked questions
Everything you might want to know before you order.
What voltage range does this circuit tester support?
This tester supports a voltage range of 6V-48V, and measures DC voltage from 3.5V to 36V with ±2% accuracy.
How long is the cable?
The cable is 4.5 meters (14.76 feet) long, allowing you to reach from the front to the rear of the vehicle.
How does overload protection work?
Integrated overload protection automatically cuts power when current exceeds 8A, helping prevent damage to the tester or the vehicle's electrical system.
What is the housing made of?
The housing is made of durable ABS plastic, built for everyday garage use.
Can I use this tester on 12V and 24V systems?
Yes, the tester is powered directly from the vehicle battery and works on both 12V and 24V systems.
Shipping & returns
Shipping
- Delivers to United States (based on your selected country/region).
- Estimated delivery: 3–15 business days after dispatch.
- Shipping cost: Free.
Returns
You can request a return within 14 days after delivery. Standard returns have a €4.00 EUR (approximately $4.66 USD) flat-rate return shipping fee, deducted from your refund. Return shipping is free for items that arrived damaged, defective, or incorrect. Items should be unused and in original packaging where possible. Contact us before sending anything back.