



Electrical Testers, Continuity Testers and Voltage Detectors
Known as go-to frontline troubleshooting tools by Electricians, Fluke Electrical Test Tools are designed for every application, from non-contact to contact voltage and continuity detection, open jaw current and motor phase rotation testing. Accurate, safe and easy to use.
Fluke BK120 SmartTraceTM Breaker Finder with NCV mode
Breaker hunting made easy
Stop the guesswork, ensure safety, and save time with the BK120 - your one-stop shop for effortless circuit identification and voltage detection. The BK120 is a versatile tool designed for electricians, homeowners, and maintenance professionals. This user-friendly system streamlines electrical work, circuit tracing, and troubleshooting, making it an essential addition to any toolbox.
- Locate the correct breaker quickly and accurately
- Built-in GFCI Tester
- Low battery indicator
- Conserve battery life with auto sleep mode
- Illuminate your workspace for clear visibility in low-light environments
- CAT III 150 V safety rated
Key Features

Easy to use and accurate
Eliminate the guesswork! The BK120 accurately identifies circuit breakers at the panel with a two-part system: a Breaker Finder and a Transmitter. This ensures you're working on the correct circuit every time.

Dual-Sensitivity NCV Detection
Indicates proximity and actual detection of AC voltage on supply
cords or terminal strips with advanced NCV mode, catering to both
low and high voltage situations.

One-button GFCI tests
Ensure the safety of your workspace with the one-button GFCI test function. This feature simulates a ground fault, verifying the functionality of your GFCI outlets and their ability to trip the circuit in case of a real fault.

Clear Audible and Visual Alerts
Never miss a beat! The BK120 features both audible alerts and visual signals to indicate the presence of AC voltage and the correct breaker identification.
![]() Fluke BK120 SmartTrace Breaker Finder and Socket Tester | ![]() Fluke BK120 Breaker Finder Bundle with 107 Digital Multimeter and Socket Tester | ![]() Fluke BK120 Breaker Finder Bundle with T5-600 Electrical Tester and Socket Te... | |
|---|---|---|---|
| Customer Reviews | — | — | — |
| Price | — | — | — |
| Included | BK120 Transmitter and Receiver | BK120 Transmitter and Receiver, 107 Digital Multimeter, Test Leads, and Magnetic Hanger | BK120 Transmitter and Receiver, T5-600 Electrical Tester and Test Probes |


Fluke BK120 SmartTraceTM Breaker Finder with NCV mode

Electrical Testers, Continuity Testers and Voltage Detectors
Known as go-to frontline troubleshooting tools by Electricians, Fluke Electrical Test Tools are designed for every application, from non-contact to contact voltage and continuity detection, open jaw current and motor phase rotation testing. Accurate, safe and easy to use.

Breaker hunting made easy
Stop the guesswork, ensure safety, and save time with the BK120 - your one-stop shop for effortless circuit identification and voltage detection. The BK120 is a versatile tool designed for electricians, homeowners, and maintenance professionals. This user-friendly system streamlines electrical work, circuit tracing, and troubleshooting, making it an essential addition to any toolbox.
- Locate the correct breaker quickly and accurately
- Built-in GFCI Tester
- Low battery indicator
- Conserve battery life with auto sleep mode
- Illuminate your workspace for clear visibility in low-light environments
- CAT III 150 V safety rated
Key Features

Easy to use and accurate
Eliminate the guesswork! The BK120 accurately identifies circuit breakers at the panel with a two-part system: a Breaker Finder and a Transmitter. This ensures you're working on the correct circuit every time.

Dual-Sensitivity NCV Detection
Indicates proximity and actual detection of AC voltage on supply
cords or terminal strips with advanced NCV mode, catering to both
low and high voltage situations.

One-button GFCI tests
Ensure the safety of your workspace with the one-button GFCI test function. This feature simulates a ground fault, verifying the functionality of your GFCI outlets and their ability to trip the circuit in case of a real fault.

Clear Audible and Visual Alerts
Never miss a beat! The BK120 features both audible alerts and visual signals to indicate the presence of AC voltage and the correct breaker identification.
![]() Fluke BK120 SmartTrace Breaker Finder and Socket Tester | ![]() Fluke BK120 Breaker Finder Bundle with 107 Digital Multimeter and Socket Tester | ![]() Fluke BK120 Breaker Finder Bundle with T5-600 Electrical Tester and Socket Te... | |
|---|---|---|---|
| Customer Reviews | — | — | — |
| Price | — | — | — |
| Included | BK120 Transmitter and Receiver | BK120 Transmitter and Receiver, 107 Digital Multimeter, Test Leads, and Magnetic Hanger | BK120 Transmitter and Receiver, T5-600 Electrical Tester and Test Probes |


















