FLUKE ST120 GFCI Socket Tester

• Simple operation – Plug into socket; with the bright, easy-to-see LEDs, verify correct wiring or identify common wiring problems in both standard and GFCI outlets
• Know more, faster –with the handy chart, quickly identify one of six wiring conditions for the outlet
• GFCI outlets–with an integrated GFCI test, you can feel secure knowing that your GFCI equipped outlets are functioning properly