The NCVT-3P is a non-contact voltage tester with an integrated flashlight. The voltage sensor detects 12 to 1000V AC and indicates the presence of voltage in cables, cords, circuit breakers, light fixtures, switches, outlets and wires as well as AC voltage in doorbells, thermostats, low voltage lighting and irrigation systems. Includes both visual and audible signals. The NCVT-3P is rugged enough for any job site. 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. VERSATILE VOLTAGE DETECTION: This Voltage Tester offers non-contact detection of low voltage in security, entertainment, communications, environmental control, and irrigation systems VISUAL AND AUDIBLE INDICATORS: The tester detects voltage with both visual and audible indicators, providing simultaneous feedback for accurate voltage identification BRIGHT FLASHLIGHT: Equipped with a bright flashlight, this tester illuminates the work area, allowing for enhanced visibility. The flashlight can also be used independently of the voltage detection function GREEN LIGHT INDICATOR: A green light indicates no voltage, providing a clear indication when no voltage is present LIGHTWEIGHT AND COMPACT: With its lightweight and compact design, this tester is easy to carry and features a pocket clip for convenient storage and quick access AUTO POWER-OFF FEATURE: The tester includes an auto power-off feature that conserves battery life by automatically turning off after a period of inactivity, ensuring long-lasting performance CAT IV 1000V RATING: With a CAT IV 1000V rating, this voltage tester provides expanded operation capabilities and offers reliable protection during electrical testing