WARNING! May not indicate presence of dangerous voltage. May display some wiring configurations incorrectly. Triplett Plug-Bug Instructions For use on 110 to 125 VAC receptacles only. 1) Test the Plug-Bug 2 on a known good receptacle before using on other receptacles. E150282 LISTED 4F67 2) Insert Plug-Bug 2 into receptacle to be tested and observe lights. Refer to Chart below or on tester for results. 3) If testing a GFCI protected receptacle, insert Plug-Bug 2 into receptacle and observe lights.