There is a continuous-time switch on this Grove module. The output from the module switches from low (turns on) when a magnetic field (south polarity) is perpendicular to the Hall sensor and when it passes the operate point threshold BOP it switches to high (turns off) when the magnetic field disappears.

The twig can for example be used to measure RPM of a wheel or a motor.

Features

• Grove Compatible Interface
• 400ns transition period for rise and fall.
• Continuous-time hall effect sensor
• Reverse current protection