Zircon 59492 CF12 Circuit Breaker Finder and AC Voltage Finder Combo Kit CF 12 Circuit Finder - Allows one person to locate a specific circuit breaker quickly & easily CF 12 Circuit Finder - Automatic calibration; lights and audio indicate circuit location CF 12 Circuit Finder - Snaps together for easy storage AC Voltage Finder - Locates AC wires to 3" deep AC Voltage Finder - Locates unshielded wire and those in plastic conduit