What's the best way to detect the magnet? Use anther magnet. But it's not sensitive enough, and you have to feel it by yourself. This magnetic sensor knows whether there is a magnetic object nearby or not, and it correctly tells you through a digital output. Features * Wide voltage range from 3.3V to 5V * Standard assembling structure (Times-of-5mm Center distance between two 3mm mounting holes) * Easily recognitive interfaces of sensors ("A" for analog and "D" for digital) * Icons to simplely illustrate sensor function * High quality connector * Immersion gold surface Connection Example - I/O Expansion Shield V7 Specifications * Supply Voltage: 3.3V to 5V * Indicator LED on board * Interface: Digital * Size: 22 x 30mm Resources * Product Wiki * Schematic Package Contents * 1x Digital magnetic sensor * 1x Digital cable https://elecena.pl/product/22714002/gravity-digital-magnetic-sensor 2023-03-06 https://elecena.pl/product/22714002/gravity-digital-magnetic-sensor 2023-12-27 https://elecena.pl/product/22714002/gravity-digital-magnetic-sensor 2024-09-19 https://elecena.pl/product/22714002/gravity-digital-magnetic-sensor 2024-11-29 https://elecena.pl/product/22714002/gravity-digital-magnetic-sensor 2024-11-30 https://elecena.pl/product/22714002/gravity-digital-magnetic-sensor 2025-02-14 https://elecena.pl/product/22714002/gravity-digital-magnetic-sensor 2025-04-11 https://elecena.pl/product/22714002/gravity-digital-magnetic-sensor 2025-11-28 https://elecena.pl/product/22714002/gravity-digital-magnetic-sensor 2025-11-29