Engineered to specifications required by professional electricians the innovative 2in1 dualcheck tester from sperry instruments saves you time and money, while providing quality you can trust This patentpending dualended tester incorporates 2 of the most popular testers used by electricians, inspectors, technicians and homeowners into a single unit Engineered with an exclusive design and latest technology gfci outlet tester on one end and a 50 to 1000 VAC noncontact voltage tester on the other the dualcheck quickly provides an accurate analysis of any 120 V receptacle The noncontact voltage tester detects 50 to 1000 VAC and features a bright 360 deg led visual indicator along with an audible beeping indicator of the presence of voltage On the other end our bestinclass gfci outlet tester features a clear and easyto understand single led readout indicating correct wiring or open ground, open neutral, hotgnd reverse, hotneu reverse and open hot wiring errors without the need to memorize or interpret a chart Designed for the jobsite this tester features hiimpact abs housing with a 250 lb crush rating and the ability to withstand drops of up to 10 ft Conceived with long workdays in mind this unit also offers overmolded grips to ensure user comfort during repeated or prolonged use