1. This is an equipment used to test the automotive electrical system within 6 to 24V

2. Determine the polarity and circuit circumstance (short/open)

3. Activating the components with positive or negative current without jumper wire

4. Testing the voltage and continuity of the circuit illumination

5. Include a cigarette lighter adapter, a hook-up clip, an extension probe (85mm), and extension 20 feet lead