description electronic ac/dc voltage tester klein tools et40 is an electronic ac/dc voltage tester. it features indicators for positive and negative dc polarity, and tests dc voltages as low as 1.5v. it tests ac voltages 12-240vac. excellent for checking, verifying or troubleshooting common residential electrical wiring in electrical outlets, light fixtures, doorbells and more. it operates on 2 x aaa batteries. tests voltages for ac at four useful levels: from 12v to 240v ac. tests voltages for dc at 1.5v to >17- 24v, at four useful levels. identifies and distinguishes between ac or dc voltage. powers off automatically after approximately 2 minutes of non-use to conserve battery life. catiii 250v, class 2, double insulation. ingress protection ip41 dust and water resistant. built-in test lead holders on sides of tester. low battery indicator with easily accessible battery compartment. pocket clip secures tester to pocket for reliable everyday carrying. uses 2 x aaa batteries (included). identifies and distinguishes between ac or dc voltage. 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 voltage tester for ac voltages from 12v to 240v ac at four useful levels aligned with commonly used residential voltages tests dc voltages from 1.5v to greater than 17 to 24v at four useful levels aligned with commonly used dc voltages bright leds illuminate to indicate the type and level of voltage detected built to withstand a 9.8-foot (3 m) drop indicates polarity when measuring dc voltages powers off automatically after approximately 2 minutes of non-use to conserve battery life catiii 250v, class 2, double insulation ingress protection ip41 dust and water resistant built-in test lead holders on sides of tester specifications acme tools brand name klein tools acme tools part number et40 assembled weight (lbs) 0.268 battery quantity required 2 battery size aaa california proposition 65 warning required yes color / finish orange country of origin china dc polarity indicator yes dc voltage dc indicators:1.5v, 9v, 12v, >17-24v digital / analog analog digital display no globaltradeitemnumber (gtin) 00092644691836 internal supplier part # et40 internet product code (ipc) 413b72467b1 manufacturer warranty please refer to attached warranty document. material plastic housing, pcb with electronic components package depth 9 package height 1.9 package weight 2.3 package weight (lbs) 2.3 tester type voltage upc 092644691836