Magnetic Pole Identification Pen, an essential tool for precise polarity detection in magnetic fields. With a sensitivity of ±5mT and intuitive LED display, distinguishing between North and South poles is effortless. Powered by two AAA batteries, it offers over 10 hours of uninterrupted usage, making it perfect for various industrial and field applications. Designed to withstand temperatures from -20°C to +80°C, with a storage capacity of -40°C to +150°C, it ensures reliable performance in diverse environments. Compact, lightweight, and easy to use, this pen is the go-to solution for professionals requiring accurate magnetic field analysis on the go.