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Function: This engine spark plug tester pen enables non-disassembly testing of ignition systems and circuit breakers, including spark plug high-voltage wires and ignition coils, to verify their proper functioning. It responds quickly and provides accurate test results.
Special Design: This ignition coil tester pen features an upgraded design with a grooved tip, increasing the contact area between the wire and the testing instrument for more accurate results. It also comes with a high-brightness bulb for easy observation of results.
Portable: This spark ignition tester pen is the same size as a regular pen and comes with a portable pen clip, allowing it to be stored in a toolkit or clothing pocket. It can be used anytime, even when working outdoors.
Usage: This ignition tester pen is easy to use. With the engine running, place the grooved end of the instrument on the spark plug wire. If the bulb flashes, it indicates that the spark plug wire is transmitting the spark plug signal.
Package: You will get 1 x spark ignition tester pen, suitable for testing most coils. The waterproof housing ensures a long service life, making it a time-saving, effort-saving, safe, and reliable method for fault diagnosis.

1.This ignition tester pen allows for non-disassembly measurement of coil functionality. The grooved tip and high-brightness bulb ensure precise and easily identifiable measurements.

2.This small engine spark plug tester pen features a portable pen clip finger guard and waterproof housing, making it ideal for outdoor use.

3.You will receive 1 x spark ignition tester pen, suitable for testing circuit breakers in most ignition systems, providing a time-saving, effortless, safe, and accurate testing method.