Klein Tools Premium Electrical Test Kit Cat. No. RT250KIT includes an electrical receptacle tester with LCD and a non-contact voltage tester with flashlight. The electrical receptacle tester, Cat. No. RT250 tests the wiring conditions at an electrical outlet and inspects GFCI devices. The LCD displays the voltage, identifies the wiring fault, and the time required to trip a GFCI device. It is designated for use with North American 3-wire 120V electrical outlets. The non-contact voltage tester with flashlight, Cat. No. NCVT3P has dual-range detection from 12 to 1000V AC or 70 to 1000V AC for a broad variety of low-voltage or standard voltage applications. The bright flashlight can be used independent of, or with the voltage detection function. GFCI electrical receptacle tester and non-contact voltage tester. Large LCD display shows voltage, wire faults, and GFCI trip time. Voltage tester detects from 12 to 1000 V AC or 70 to 1000V AC. Detects voltage with simultaneous visual and audible voltage indicators. Bright flashlight illuminates work area and may be used independent of voltage detection function. Lightweight, compact tool with pocket clip provides convenient storage and quick access. 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.