What's the best way to detect the magnet? Use anther magnet. But it's not sensitive enough. You have to feel it by youself. Right！This Hall sensor knows whether there is a magnetic object nearby or not. And it correctly tells you through ditigal output.See below picture for a quick demo!
Note: It's a omnipolar magnet detector so that it can not tell two polarities apart.Specifications
- Supply Voltage: 3.3V to 5V
- Indicator LED on board
- Interface: Digital
- Size:22x30mm (0.87x1.18")