description sperry dual check tester engineered to specifications required by professional electricians the innovative 2-in-1 dual check??tester from sperry instruments saves you time and money, while providing quality you can trust. this patent-pending dual-ended 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 50-1000v ac non-contact voltage tester on the other the dual check??quickly provides an accurate analysis of any 120 volt receptacle. the non-contact voltage tester detects 50-1000v ac and features a bright 360 degree led visual indicator along with an audible beeping indicator of the presence of voltage. on the other end our best-in-class gfci outlet tester's advanced circuitry and proprietary design precisely detects the required low resistance values (less than 10ohms) on ground wire instantly and features a clear and easy-to understand single led readout indicating correct wiring or bad ground, open neutral, hot/gnd reverse, hot/nu reverse, and open hot wiring errors without the need to memorize or interpret a chart. designed for the job site this tester features hi-impact abs housing with a 250 lb crush rating and the ability to withstand drops of up to 10 feet. backed by a lifetime warranty this tool will take up less space in your toolbox and increase your productivity for years to come. california proposition 65 warning. view warning label features save time and money with 2 popular testers in 1 unit: non-contact voltage detector on 1 end and gfci outlet tester on the other non-contact voltage tester detects 50-to-1000-volt ac and features a bright 360 led visual indicator along with an audible beeping indicator of the presence of voltage gfci outlet tester features a clear and easy-to understand single led readout indicating correct wiring or open ground, open neutral, hot/gnd reverse, hot/neu reverse, and open hot wiring errors without the need to memorize or interpret a chart beeping audible indicator confirms presence of voltage hi-impact abs housing withstands a 10-ft drop and offers a 250-lb crush rating hi-impact abs housing withstands a 10 ft drop and offers a 250 lb. crush rating limited lifetime warranty specifications ac voltage 50-1000 ac voltage range & resolution 50-1000 v acme tools brand name sperry instruments acme tools part number vd7504gfi application non-contact voltage tester on one end detects the presence of voltage from 5- to 1000 volts and gfci outlet receptacle on the other end tests for bad ground, open neutral, hot/ground reversed, hot/neutral reversed and open hot wiring assembled weight (lbs) 0.25 battery quantity required 1 battery size lr41 california proposition 65 warning required no case included no color / finish yellow/black country of origin china data hold no dc polarity indicator no dc voltage 0 digital display not required electronic no globaltradeitemnumber (gtin) 00032076922122 internal supplier part # vd7504gfi internet product code (ipc) b0edae08a5d manufacturer warranty limited lifetime warranty material hi impact abs housing package contents 1 dual check non-contact voltage tester and gfci outlet analyzer package depth 1.5 package height 9 package weight 0.3 package weight (lbs) 0.3 tester type non-contact tests continuity no upc 032076922122 visual / audio alert audio/visual voltage compatibility ac only