| style="text-align: left; vertical-align: top;" | Alarm buttons, door sensors, ignition, etc. have two output states: high or low. {{{model|FMB1YX}}} Digital inputs are used to detect these states. | | style="text-align: left; vertical-align: top;" | Alarm buttons, door sensors, ignition, etc. have two output states: high or low. {{{model|FMB1YX}}} Digital inputs are used to detect these states. |