What's in the box:
Car Spark Plug Tester Automotive Double Hole Analyzer For 12V Gasoline Vehicles Petrol (Us)
This tester is designed to test spark plug performance and ignition strength.
Two testing holes, you can test two spark plugs meanwhile.
Unique protective cover design to ensure the safety of users.
With indicator, show the status of the spark plug, more intuitive.
Easy to operate, plug and play, economical and useful tool.
Made of premium quality material, solid and durable.
Material: Plastic & Metal
Step 1:Please insert the spark plug into socket 1 or 2
Step 2:Close the cover, insert the adapter into the right interface of the product, and connect the power supply.
Step 3:Rotate 6 clockwise to turn on 5 indicator light, 3 for 1 socket, 2 for 4 socket, and high voltage light.
Step 4:Continue to rotate switch 6 and adjust the working frequency from 1000 to 6000 rpm. The higher the frequency, the higher the spark plug strength.
1 X Tester
1 X Charger
1 X instruction