Description All-Sun EM285 Specification: Operation voltage: 6-24V DC Cable length: about 4m Overload protection: 8A (When the current exceeds 8A, this item will disconnect the current automatically.) Weight: about 300g All-Sun EM285 Operation Instrcution: Unroll the unit's cable Clamp the red clip to the positive terminal of the vehicle's battery Clamp the black clip to the negative terminal of the vehicle's battery All-Sun EM285 Applications: 1. Test for continuity 2. Test for polarity of a voltage 3. Check switches, relays and the on-off of diodes, fuses and circuits 4. Test for polarity of electric cables and plugs 5. Track and locate short circuits 6. Test for bad ground contacts Product includes: 1*diagnostic cable list