Features: Measure magnetic field strength up to 1600 units with ±5% variation comparable to advanced instruments. Uses KTH5641A1 sensing component displaying 0 2.5V for north alignment and 2.5 5V for south alignment at 1.5mV per unit sensitivity. Feature 18 bit analog to digital conversion MCP341 chip and 51 microcontroller for accurate measurements. Identifies magnetic patterns showing strongest readings at magnet edges and termination areas. Powered by 3.7V rechargeable battery with standard charging port (cable not included). Supports typical phone chargers for simple recharging in different environments. Ideal for checking magnetic strength distribution in rectangular magnets, circular magnets, and technical components. Reveals varying intensity levels across different magnet sections. Demonstrates how magnetic fields concentrate at border regions (rectangular magnet ends/circular magnet rims) while weakening at center zones due to opposing field interactions. Specifications: Component:Plastic Type:B/A Size:Approx.4cm/1.57inch Package Includes: 1Pc Detection Module note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.