Introduction
This is a Magnetic Induction Sensor. It senses the magnetic materials within a detection range up to 3cm. The detection range and the strength of the magnetic field are proportional.The output is digital on/off. This sensor uses the SFE Reed Switch – Magnetic Field Sensor.

Specification
Sensing magnetic materials
Detection range: up to 3cm
Output: digital on/off
Detection range and magnetic field strength are proportional