Magnetic Pole Detection Pen High Accuracy Pole Discrimination Tester Lightweight for School Physics Experiment Teaching Use

### Description Portable High-Sensitivity Magnetic Pole Tester Pen | Fast N/S Pole Identification for Magnet Inspection, Electronic DIY & Industrial Testing ### Features ✅ High-Precision Sensing: Fitted with an ultra-sensitive magnetic sensor chip boasting 5mT detection sensitivity, it instantly and accurately identifies north and south poles across all magnetic materials. Get reliable results in seconds to slash your work time and boost efficiency. ✅ Clear Visual Indication: Comes with bright, color-coded N/S pole LED indicators that light up immediately once a pole is detected. Results are easy to read even in dim lighting, no complicated judgment needed at all. ✅ Sturdy Durable Build: Crafted with thickened high-grade FR4 PCB substrate, it delivers exceptional bending, wear and corrosion resistance. The stable structure resists deformation and damage even with frequent daily use, for a super long service life. ✅ Battery-Free Convenient Power: Uses a standard metal USB male plug, works directly with computer USB ports, power banks or any regular USB power source. No disposable batteries required, cutting down your operating costs and eliminating mid-work power outage headaches. ✅ Ultra-Compact Portable Design: Integrated ultra-thin PCB structure, lightweight and tiny enough to slip right into your pocket, tool bag or storage box. Perfect for on-site or outdoor testing tasks, no extra space taken up at all. ### Specifications Type: Magnetic Pole Detection Tool Color: Black Package: 1 x Magnetic Pole Tester Pen ### Notes 1. The product image is for reference only, please refer to the description for actual size details. 2. Minor measurement deviations may occur due to manual measurement, thank you for your understanding. 3. Actual color may vary slightly from the image due to different monitor display settings. The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Joom's policies and EU Product Safety and Compliance laws.