The Aroefa Electronic Car Fault Tester Pen is a professional-grade diagnostic tool designed to help you easily identify and troubleshoot electrical issues in vehicles. Whether you’re a car technician, mechanic, or DIY car owner, this tester pen makes it simple to check circuits, fuses, battery voltage, and wiring connections with accuracy and speed.

Built with advanced electronic detection technology, the Aroefa Tester Pen provides instant and precise readings, helping you pinpoint faults before they become costly problems. Compact, durable, and easy to use — it’s the perfect companion for any automotive maintenance toolkit.

⚙️ Key Features

• 🔌 Accurate Electrical Diagnostics: Quickly test DC voltage, continuity, polarity, and wiring connections in all types of vehicles.

• 💡 LED & Digital Display Indicators: Bright LED lights and/or a digital readout (depending on model) provide clear test results even in low-light environments.

• ⚡ Wide Voltage Range: Suitable for 6V, 12V, and 24V automotive systems — perfect for cars, motorcycles, trucks, and other vehicles.

• 🧲 Sturdy & Safe Design: Made from high-quality, insulated materials that ensure user safety and long-term durability.

• 🔋 Easy Power Testing: Detect battery status, alternator charging conditions, and electrical continuity within seconds.

• 🪶 Lightweight & Portable: Slim pen-style design fits comfortably in your hand and easily into your toolbox or glove compartment.

🛠️ How It Works

1. Connect the alligator clip to the vehicle’s ground (negative terminal or metal surface).

2. Touch the probe tip to the circuit or component you want to test.

3. Read the LED or display output to determine the voltage or fault condition.

4. Diagnose & Fix – Use the instant feedback to locate wiring faults, blown fuses, or grounding issues quickly.

✅ Why Choose Aroefa?

• Reliable and trusted by professional mechanics.

• Reduces time spent diagnosing electrical problems.

• Compact tool that works with most car models.

• Great value for both beginners and experts in auto repair.

SPECIFICATIONS

External Testing Certification: CCC

High-concerned chemical: None

Item Height: 2.5

Item Length: 15.2

Item Weight: 70

Item Width: 1.8

Material: ABS

Model Name: None

Origin: Mainland China,Mainland China

Important Information

Material:ABS

Package Size:

Length: 15.2cm/5.98" (Approx.)

Overview:
This fault detection pen is characterized by compact size and light weight, which enables it to be conveniently put into the pocket and allow you to carry it anywhere.
Indicator light and buzzer design are the outstanding features of this fault detection pen, so it can make it easy for you to check if the car's electronic components are faulty.
Made of high quality ABS material, this product is lightweight and durable to use.
The length of the product is 15.2cm.
The device uses advanced German technology, no need to touch the circuit, the sensor can collect and analyze the signal, the diagnosis results can be displayed by LED lights and buzzer.

Note:
Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Automotive oil tester Test Range: Coils (conventional coils, double spark coils, Dingle spark coils), generators, internal fan motors, combination valves (heating, water cooling) emission control valves, fuel injectors, spark plugs, Hall sensors, relays. Automotive Oil Tester Description: Place the probe on the electronic component for testing. If it works normally, there will be a corresponding voice signal and LED flashing to show the park. Different wires can be tested on top of the detector with different sensitivities on both sides. Secure the probe to the coil for accurate test results. There is a mode switch on the probe. Level II for normal testing and level III for strong magnetic field testing.

Specifications:
Power Voltage: 7V Operating Temperature: -20~50 Degrees Celsius Features: Magnetic Induction, Indicator Light, Portable

Package Content:
1 x Fault Detection Pen