KY-024 Linear Magnetic Hall Effect Sensor Module

The A3144 and similar Hall sensors already in the catalog are digital, they switch on or off once a magnet crosses a fixed threshold, which is exactly right for detecting a door closing or a wheel passing a fixed point but can't say how strong or how close that magnet actually is. The KY-024 takes the linear approach instead, outputting an analog voltage that scales smoothly with magnetic field strength, making it the better choice for projects that need to measure proximity or position continuously rather than just detect a single trigger point.