APEM’s newest series, the IH Series, uses Hall Effect technology to greatly increase life span by reducing the wear and tear of repeated contact. Sensors measure the physical travel of the actuator button. When the button is pushed, the magnets attached to the actuator shaft pass by the Hall Effect Sensor, causing a fluctuation in the magnetic field, resulting in a voltage change that is interpreted by the integrated CPU. The IH series comes in two versions: proportional outlet and switch.