This non-contact test pencil is a safe, reliable, and highly sensitive tool designed for distinguishing between zero fire lines with ease. It features an AC voltage measuring range of 24V to 1000V, making it suitable for a wide variety of electrical tasks. The pencil comes with a High/Low Dual Mode detection system: Low (24-1000V, green) and High (90-1000V, red), and operates at a frequency of 50Hz/60Hz. For added convenience, it includes an audio and light alarm to alert you to voltage presence and a low voltage indication for safety. The pencil is designed with an auto power off feature, turning off automatically after 5 minutes of inactivity, preserving battery life. A built-in flashlight adds further utility in low-light conditions. With a CAT IV 1000V rating and the ability to withstand a 1-meter drop, this tester is both durable and safe. It is also ETL and CE certified, ensuring compliance with high-quality safety standards. Ideal for both professional electricians and DIY enthusiasts, this voltage tester provides both reliability and convenience.