Feature 1The unit is the best electrical tester for reducing diagnostic time in automotive electrical systems. 25m/16.4ft long cable designed makes your testing easily, which is flexible to use. 3After a simple hook-up of the unit to the vehicle's battery, automotive technician can conduct a positive or negative battery current to the tip by rocking the power switch forward or backward. 4The unit has short-circuit protection and can test for bad ground contacts instantly. 5It allows you to track and locate short circuits, which is practical to use. 6It can also test for continuity with the assistance of its auxiliary ground lead. 7It is a comprehensive 6-24V DC test kit, features stable and professional performance.Condition: 100% Brand NewItem Type: Car Electric Circuit TesterMaterial: ABSColor: As picture shownWorking Voltage: 6-24V DCCable Length: Approx. 5m/16.4ftOverload Protection: 8A (when the current exceeds 8A, this item will automatically cut off the current).Applications:1. Test for continuity2. Test for polarity of a voltage3. Check switches, relays and the on-off of diodes, fuses and circuits 4. Test for polarity of electric cables and plugs5. Track and locate short circuits6. Test for bad ground contactsOperation Instrcution:Unroll the unit's cableClamp the red clip to the positive terminal of the vehicle's batteryClamp the black clip to the negative terminal of the vehicle's battery .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Car Electric Circuit Tester1 x Manual