China Factory electric circuit voltage tester pen/Automotive circuit tester pen with AS material and LED shine diode

 YT-0426A the Professional vehicle tools car battery tester

Instruction:

1. Insert the banana plug at one end of the testing wire into top metal cap of the neon-electroscope and ensure sound contact.

2. Clip the alligator clip at the other end the testing wire to the grouding (i.e. the automobile's metal casing)

3.Insert the eletroscope's needle head into insulation of the wire to be measured.

4. A lit lamp in the pen arm indicates a loop ( or complete circuit) has been established at the testing point, and the service is normal. If the indicator is not lit, it shows there is fault that needs shooting.

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