The Lisle Computer Safe Circuit Tester - 24550 is the perfect tool for quickly and accurately testing electrical circuits. This easy-to-use tester features a bright LED light that illuminates when the circuit is complete, making it easy to identify faulty wiring. The tester is equipped with a 6-foot cord, allowing you to easily reach even the most difficult-to-access areas. The tester is designed to be safe for use on all computer components and is UL listed for safety. With its durable construction and reliable performance, the Lisle Computer Safe Circuit Tester - 24550 is the perfect tool for the job.