- Maintain a Safe Distance: Keep your clothing, hair, hands, tools, and test equipment at a safe distance from all operating or hot equipment to prevent accidents.
- High Voltage Warning: Take special care when working near the ignition coil, distributor cap, ignition wires, and spark plugs—these components can unleash dangerously high voltages when the engine is running.
- Fire Safety Precaution: Always have a fire extinguisher readily available when dealing with gasoline, chemicals, or electrical equipment to swiftly tackle any potential fire hazards.
- Secure the Vehicle: Before beginning any tests, make sure to securely place the transmission in Park (for automatic vehicles) or Neutral (for manual vehicles) and engage the handbrake.
- Connection Safety: For your safety, avoid connecting or disconnecting any test equipment while the ignition is on or the engine is running. Your attention to these safety measures will ensure a secure and efficient testing experience.
MRCARTOOL B530 Automotive Circuit Tester With LED Display
Rated 5.00 out of 5 based on 20 customer ratings
20 reviews $69.90
- Ultra Extension Inspection Cable 10m: Covering from the front to the rear of the vehicle
- AC & DC Voltage Detection Mode: AC detects the maximum and minimum voltage, supply frequency
- Warranty: MRCARTOOL provides 24 months warranty and 7×24 hours friendly customer service to ensure your shopping experience..Online Support>>
More Discounts? Please Contact us Get exclusive offers Here
MRCARTOOL B530 Automotive Circuit Tester is designed specifically for diagnosing vehicle electrical systems. Whether for professional technicians or automotive enthusiasts, it swiftly and accurately assists in testing circuits ranging from 6 to 30 volts. The B530 features a streamlined design for ease of use, allowing a quick connection to the vehicle battery to effortlessly determine circuit polarity and continuity without the need for repeated clip reconnections. By conducting battery current directly to the probe tip, it empowers users to instantly activate and test components right in their hands or on the vehicle, delivering rapid, pinpoint electrical diagnostics.
📝Warm Tips
What is the difference between all MRCARTOOL Circuit Tester?
⚙️Other Models
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MRCARTOOL B550 Automotive Circuit Tester With LED Display
Rated 4.95 out of 5 based on 22 customer ratings$129.99Original price was: $129.99.$109.99Current price is: $109.99.
MRCARTOOL B530 Circuit Tester Features
Features
- 4 Versatile Test Modes: Quickly cycle through DC Voltage, AC Voltage, Resistance, and Tone On/Off modes with a simple press of a button. The sharp TFT color display (160×128 dpi) guarantees you never miss a vital reading, even in dark engine bays.
- Component Activation: By rocking the ergonomic power switch forward or backward, you can instantly apply a positive or negative battery voltage to the probe tip to activate and test electrical components on the spot.
- Smart Circuit Protection: The tool is short-circuit protected. If the circuit becomes overloaded, the internal breaker trips automatically (displaying “Circuit Break” on the LCD) to prevent melted wires or blown fuses. Simply wait 15 seconds for it to cool down and hit the reset button to resume.
- Bad Ground & Continuity Checks: With its built-in auxiliary ground lead, you can instantly test for continuity on wires or verify solid ground contacts without switching tools.
- Extended Reach: Comes equipped with a long, heavy-duty power cable that allows you to test from the headlights to the taillights, including trailer connections, without constantly searching for suitable vehicle grounds.
- 2-Year Peace of Mind: We stand by our diagnostic equipment with a solid 2-year warranty covering your complete purchase against manufacturing defects.
Packing List :
| Weight | 1.118 kg |
|---|---|
| Dimensions | 28 × 18 × 9 cm |
| Ship From |
20 reviews for MRCARTOOL B530 Automotive Circuit Tester With LED Display
5.0
Based on 20 reviews
| 5 star | 100 | 100% |
| 4 star | 0% | |
| 3 star | 0% | |
| 2 star | 0% | |
| 1 star | 0% |
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Archibald
Flexible instruments for testing automotive circuit systems, reliable instruments for testing signal circuits.
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Archibald
Flexible instruments for testing automotive circuit systems, reliable instruments for testing signal circuits.
(0)
(0)

Josefina Jacobson
Product beautiful and quite most useful and easy to use tested and approved, am enthusiast in maintenance.
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Kaley Terry
muito bem embalado caixa resistente e case (estojo ) capa dura
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Elinor Torp
Super fast to Cancun Mexico one week
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Darby Bergnaum
Fast shipping, working perfectly
(0)
(0)

Nya Heller
Super I'm sustenance.
(0)
(0)







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Flexible instruments for testing automotive circuit systems, reliable instruments for testing signal circuits.
Recommend this little guy, he helps me make money and provide details on battery health etc .
Car wiring issue? A tool quickly found the fault in rear wheel well, easy & effective!
Je ne l’ai pas utilis¨¦ souvent mais fonctionne tr¨¨s bien et fait tout ce que que ce genre d’appareil doit faIre, je suis satisfait et je le recommande pour les m¨¦caniciens occasionnels.
Works great and easy to use