description afci /gfci outlet tester rt310 is an electrical tester that tests the wiring condition at an electrical outlet, and inspects and checks afci and gfci devices. it is designed for use with north american 120v electrical outlets. it can detect and identify common wiring faults. includes 3 x 1.5v aaa alkaline batteries. outlet tester detect common faults in electrical outlets. receptacle tester delivers visual indication of wiring conditions. includes 10-inch (254 mm) flexible electrical cord for easy access. designed to test north american-style grounded electrical outlets in 120v ac circuits (incorporates a three-pin plug). electrical plug is on a 10-inch (25.4 cm) flexible electrical cord to access electrical outlets in difficult to reach locations. low battery indicator and easily accessible battery compartment; uses 3 x 1.5v aaa alkaline batteries (included). powers off automatically after approximately 2 minutes of non-use to conserve battery life. built to withstand a 6.6-foot (2 m) drop. catiii 135v safety rating. measurement category iii is applicable to test and measuring circuits connected to the distribution part of the buildings low-voltage mains installation. the rt310 features a patent pending afci test method that is unique to klein tools. 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 e california proposition 65 warning. view warning label features gfci tester detects the most common wiring faults in standard, afci, and gfci electrical outlets test afci devices by simulating arc fault conditions test gfci devices by simulating ground fault conditions capable of detecting a dual-open wiring fault with simultaneous open neutral and open ground wires (patent pending technology) tester delivers clear visual indication of the wiring condition at the electrical outlet designed to test north american-style grounded electrical outlets in 120v ac circuits (incorporates a three-pin plug) electrical plug is on a 10-inch (25.4 cm) flexible electrical cord to access electrical outlets in difficult to reach locations low battery indicator and easily accessible battery compartment; uses 3 x 1.5v aaa alkaline batteries (included) powers off automatically after approximately 2 minutes of non-use to conserve battery life specifications acme tools brand name klein tools acme tools part number rt310 application detects the most common wiring faults in standard, afci and gfci electrical outlets assembled weight (lbs) 5.0 battery quantity required 3 battery size aaa california proposition 65 warning required yes color / finish none country of origin china dc polarity indicator no dc voltage 0 depth (in) 1.28 digital / analog digital digital display yes globaltradeitemnumber (gtin) 00092644691829 internal supplier part # rt310 internet product code (ipc) b46faddc43e length (in) 7.4 manufacturer warranty please refer to attached warranty document. material plastic package contents afci/gfci outlet tester package depth 11 package height 2.75 package weight 0.7 package weight (lbs) 5 tester type circuit upc 092644691829 visual / audio alert visual width (in) 2.37