description gfci receptacle tester klein tools receptacle testers are designed to detect the most common wiring problems in standard and gfci receptacles. a convenient chart on the tester helps determine wiring condition in outlet, based on lights results. conditions indicated: open ground, reverse polarity, open hot, open neutral, hot/ground reversed. 110/125v ac electrical tester works on standard/gfci receptacles. gfci outlet tester with lights, indicates wiring problems. indicates open ground, reverse polarity and other conditions. for more than 160 years, klein tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the job done right. our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. klein isn't just the name of our company, it's also our family name. and since we're an american company that's family-owned and family-run, you know you can count on us to be here tomorrow. klein tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... since 1857. california proposition 65 warning. view warning label features gfci tester detects the most common wiring problems in standard and gfci receptacles works on gfci outlets and confirms operation of the ground fault protective device built to withstand a 6.6-foot (2m) drop operating temp: 32-degree to 140-degree fahrenheit (0-degree to 40-degree celsius) nominal voltage: 110/125v ac at 50/60hz in 3-wire outlet nominal voltage: 110/125v ac at 50/60hz in 3-wire outlet specifications acme tools brand name klein tools acme tools part number rt210 assembled weight (lbs) 0.123 battery quantity required 0 battery size no battery required california proposition 65 warning required yes color / finish orange country of origin china dc polarity indicator no dc voltage 110/125 digital / analog analog digital display no globaltradeitemnumber (gtin) 00092644690273 internal supplier part # rt210 internet product code (ipc) 2ed88159b18 manufacturer warranty please refer to attached warranty document. material plastic package depth 5.75 package height 1.25 package weight 0.13 package weight (lbs) 0.13 tester type receptacle upc 092644690273