Fluke ST120+ GFCI Socket Tester with Audible Beeper and LED Wiring Indicators

Fluke ST120+ GFCI Socket Tester with Audible Voltage Detection

The Fluke ST120+ GFCI Socket Tester is a handheld electrical diagnostic tool designed to quickly verify outlet wiring integrity and GFCI functionality. It combines visual LED indicators with an integrated audible beeper to streamline outlet testing and breaker identification.

Integrated Audible and Visual Fault Identification

• Three LED indicators display six distinct wiring conditions
• Integrated, switchable beeper alerts when voltage is detected
• Front-mounted wiring legend enables immediate fault interpretation
• One-button GFCI test verifies outlet protection response

Designed for Fast Electrical Verification

The ST120+ plugs directly into standard electrical outlets to identify wiring status without additional setup. The audible beeper simplifies locating the correct circuit breaker by signaling voltage loss or restoration during breaker cycling.

Typical Applications

• Electrical outlet wiring verification
• GFCI outlet functional testing
• Circuit breaker identification and troubleshooting