A Hall effect sensor is a type of transducer that converts a magnetic field into an electrical signal. It is based on the Hall effect, which is a phenomenon in which a magnetic field applied perpendicular to an electric current flowing through a conductor creates a voltage perpendicular to both the magnetic field and the current. This voltage is called the Hall voltage, and it is proportional to the strength of the magnetic field.
A3144 Hall Effect Sensor
The A3144E(US1881) is an integrated Hall effect latched sensor. This makes for a robust presence sensor. A reed sensor also works nicely, but can be limited by the glass enca..