Light Keeper Pro Bulb Tester & Repair Tool

A defective bulb shunt is usually the cause of a light-string failure. To get it working again, plug the Light Keeper Pro into any empty bulb socket, pull the trigger, and an electrical pulse finds the defective bulb and clears the shunt, so your light string is ready to shine brightly again! Also checks continuity (audible and visual indicator), and tests individual bulbs. Includes a three-way bulb puller; storage with three-compartment bulb and fuse organizer in the handle; built-in battery; seven spare bulbs; storage box. UL listed.