Wide range applications: EM285 circuit tester can be used to test continuity, test polarity of a voltage, check lamp, check electric motor, and locate short circuits, test for bad ground contacts etc.<br> <br> Long test lead: The cable length is about 16ft which allows you test any electrical system easily.<br> <br> Short-circuit protection: The unit has short-circuit protection and can test for bad ground contacts instantly.<br> <br> Easy operation: After a simple -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 switch forward or backward.<br> <br> Comprehensive 6-24V DC test kit: Do not on AC voltage.<br> <br> Operation Instrcutions:<br> <br> Unroll the unit's cable<br> <br> the red clip to the positive terminal of the vehicle's battery<br> <br> the black clip to the negative terminal of the vehicle's battery<br> <br> Operation Voltage: 6-24V DC<br> <br> Overload Protection: 8A (When the current exceeds 8A, this item will disconnect the current automatically.)<br> <br> Colour: black + red<br> <br> Material: plastic + metal<br> <br> Package Contents:<br> <br> 1 * Circuit Tester<br> <br> Only the above package content, other products are not included.<br> <br> Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.