Title: LED Circuit Tester Allows accurate adjustment of base and advance timing reading. The TabsOverview SKU: CP7847 Categories: Electrical TestersCircuit Testers and Test LeadsRelated/Accessory Products: Auto Trouble ShooterAutoAnalyzer MultimeterDigital MultitesterPocket Electrical Tester SpecsFeatures: Tests spark plug wires 12V car/truck batteries 4-13V variable DC voltageHousehold 110/220 AC, DC wire/circuit LED lights indicate voltage level Piercing probe for in-circuit testing Easy-grip design for safe handlingProduct Dimensions: 8 × 6 × 0.5 inShipping Weight: 1.1 lb DownloadsProduct Documents: CP7847 Operating InstructionsHigh Resolution Images: https://otctools.com/sites/default/files/cp7847.png Videos