Multifunctional household test pencil,you can use it to test circuit and distinguish whether an object is electrified. 1pc x electric tester pen. Multi-function, double head removable. Light weight and easy to carry.Sperry Instruments GFI6302 GFCI Outlet / Receptacle Tester, Standard 120V AC Outlets, 7 Visual Indication / Wiring Legend, Home & Professional Use, Yellow & Black. 11,426. -23%$1388$17.96. Promising durability and a bright, easily read display, this Aug 30, 2021 · 1. Fluke 1AC-A1-II. Read Reviews & Check Price. If you are in the market for a unit that can detect standard voltage only, we rmend the Fluke 1 AC-A1-II, made by a premier Electrical Receptacle Tester with GFCI Diagnosis. (1,111) Write a Review. Detect problems with electrical systems using this outlet tester. $599. Compare to. KLEIN TOOLS RT210 at $12.99 Save 54%.