INNOVA 3420 Smart Test Light / Circuit Tester Designed to safely check voltage and/or ground on several electronic systems Connects using a cigarette lighter / power plug and detachable twin alligator clamps 6-foot leads provide long reach connection Unique transparent handle shows bright LEDs to identify connections (White = Proper Connection to Source, Red = Voltage Present and Green = Ground Present) Features ergonomic grip design for comfort and safety