Automotive Circuit Tester Pen– Digital Display

🔌 Long Spring Wire with Secure Alligator Clip
Featuring a highly elastic spring wire that extends up to 110 inches, this tester provides added reach and flexibility during inspections. The reinforced anti-bend tail wire helps maintain stable contact, while the oversized alligator clip allows safe and convenient one-handed operation.

Specifications:

Ideal for Automotive Electrical Checks
Designed for a wide range of automotive testing tasks, this circuit tester pen is suitable for diagnosing headlights, brake lights, turn signals, fuses, sockets, wiring faults, and loose connections. The sharp, extended probe easily accesses tight or hard-to-reach areas.

FAQ

1. Can the display be seen clearly in sunlight?
Yes. The LED digital display remains bright and readable in both outdoor and low-light conditions.

2. Does this tester show polarity direction?
Yes. Red indicates positive polarity, while green indicates negative polarity.

3. Is it suitable for modern vehicle electronics?
Yes. The integrated circuit board and protective design help ensure safe testing.

4. What systems can be tested?
It can be used to check lights, fuses, sockets, wiring faults, and other automotive electrical components.

Rapid delivery💛

At Usofuns, we believe every little thing should bring joy to your life. We have warehouses in the United States and Canada, All products will be processed your order and sent out in 1-2 business days, you will receive your item in 3-15 business days!

- United States: 5 to 7 business days（Ship from California）
- Canada: 7 to 10 business days（Ship from Ottawa）
- United Kingdom: 7 to 10 business days（Ship from London）
- Australia: 5 to 7 business days（Ship from Canberra）

We don't just sell products; we want you to enjoy the entire process of choosing one.For additional details, please visit our Shipping and Delivery page.

Most products in our store come with a one-year warranty. For details, please refer to our warranty policy.

US / CA / AU / UK – No Extra Import Fees

• FREE delivery on orders over $49.99*
• Standard Delivery: $6.95 per order (7–10 business days)
• Priority Delivery/Dispatch: $8.99 per order
• VIP Express Shipping：$17
• Air Transport Channel: $27

All orders ship within 3 business days (delays may occur during peak holiday seasons, promotions, severe weather, or carrier issues).

Additional Notes:

• Applies to the 48 contiguous US states only. Oversized items and furniture excluded.
• Packages within mainland US ship via UPS or USPS (oversized items excluded).
• All orders include tracking until delivery.
• Standard shipping usually arrives in 7–10 business days, but may take longer during peak seasons (e.g., Christmas).
• For updates, contact us anytime at: Sale@usofuns.com.

USOFUNS partners exclusively with manufacturers who uphold strong sustainability standards. We ensure that our suppliers actively assess and provide feedback on the environmental, human, and social impact of their products—across manufacturing processes, facilities, and organizational practices.

We are committed to creating products that are ethically sourced, made from sustainable materials, and aligned with our values throughout the entire supply chain.