The spark plug sensor is designed with a sliding clip,which can be easily and safely connected to the high-voltage line of No.1 cylinder with a finger press.

The sensor clip is maked with an arrow to identify the direction when using (the arrow points to the direction of the spark plug).

The handle pistol-type design conforms to the engineering design, the button is comfortable, feels good, facilitates the operation.
With reverse polarity and overload protection function, it can effective protect the safety of batteries and equipment. Adapts to all kinds of 12V battery for automobiles, motorcycles, ATVs, RVs, personal watercraft, boats, airplanes, golf carts, lawn mower, etc.
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