Features: Wide range of applications: EM285 circuit tester can be used to test continuity, test voltage polarity, check lamp, check motor electrical, track and locate short circuits, test for bad ground contacts, etc. Long test lead: The length of the cable is about 16 feet, which allows you to easily test any electrical system. Short circuit protection: the unit has short circuit protection and can instantly test for bad earth contacts. Easy operation: after simply plugging in the unit to the vehicle battery, the automotive technician can conduct positive or negative battery current to the tip by flipping the power switch forward or backward. Complete Test Kit 6 -24 V DC: do not use on AC voltage. Operating instructions: Unwind the cable from the unit Secure the clip red to the positive terminal of the vehicle battery Attach the black clip to the negative terminal of the vehicle battery Features: Color red Operating voltage: 6-24V DC Cable length: 16 feet Overload protection: 8A (When the current exceeds 8A, this item will automatically disconnect the current.) Package size: 26.5 * 9 * 4 cm Package weight: 320g Package List: 1 * Circuit Tester