The Fluke FLUKE-BK120 SmartTrace Breaker Finder can be used for identifying circuit breakers in electrical panels and detecting voltage with the non-contact voltage (NCV) mode. This two-piece tool is an essential device for electricians, homeowners, and maintenance professionals for simplifying electrical work, circuit tracing, and troubleshooting. The system consists of two main components which include the Breaker Finder Receiver and the Transmitter. With the BK120, users can work safely and efficiently, saving time by accurately identifying circuit breakers without guesswork. The BK120 is suited for use in CAT III 150V environments for added versatility in residential or commercial applications. The compact and ergonomic design ensures comfortable handling for the user during prolonged usage.

To cater to both low and high voltage situations, the BK120 indicates proximity and actual detection of AC voltage on supply cords or terminal strips with the advanced NCV mode.

The GFCI test button allows users to test the operation of GFCI outlets while the Transmitter is connected to the electrical outlet or fixture. Pressing the test button initiates a simulated ground fault, causing the GFCI to trip and interrupt the circuit. This test verifies that the GFCI's internal mechanisms are operational and capable of swiftly responding to actual ground faults. Regular testing of GFCIs is essential to ensure ongoing safety in environments where electrical appliances are used.

The Breaker Finder provides both audible alerts and visual signals to indicate the presence of AC electric fields and the correct breaker. The bright LEDs enable users to identify breakers in most lighting environments.