ITEM NAME:Car Wire Circuit Tester DC 6V/12V/24V Voltage Probe Pen Electric Auto Test Light Product Parameter: 1. Product name: auto test penci l2. Product code: CNBJ-85999A 3. Use: checking line 4. Power supply voltage: 6-12 (V) Product List: 1 * Car Test Pencil.1 Car Test Pencil. Use: checking line.