Parts & Accessories Car inspection services This is an electrical circuit tracer from Klein Tools - Model: ET450 - Features and Uses: Used to locate and trace electrical wires and circuits in walls, floors, or ceilings, whether live ( or unpowered ( It helps you to: • Know which wire or breaker feeds a specific point. • Trace the wire path behind the wall or under the ground. • Identify wires in bundles or conduits. • Work on voltages up to 480V AC and DC. In short: A professional tool for electricians and technicians to easily find circuits and wires without breaking walls.