The pencil-shaped device can detect lines with high precision, making it easier to identify and troubleshoot electrical issues. This multifunctional tool can be used to test electrical circuits and identify breakpoints, making it an essential tool for electricians and DIY enthusiasts. The device is powered by batteries, making it portable and convenient to use in various locations. The pencil-shaped device uses induction measurement to determine the voltage present in a circuit, providing accurate readings every time. Features include inductive alarm detection, intelligent zero fire line recognition, and a flashlight with two-in-one probe lighting. Specifications include a frequency of 50HZ/60HZ, AC voltage of 90V-1000VCA, and a safety level of CAT. III 1000V.