45AXIS 216FD - The I/O Terminal ConnectorThe I/O Terminal ConnectorPinout and InterfaceThe 4-pin I/O terminal connector provides the interface to:• 1 transistor output• 1 digital input• auxiliary power and GNDThe terminal connector is used in applications for e.g. motion detection, event triggering,time lapse recording, alarm notification via email, image storage to FTP locations, etc.• Input - for connecting e.g. a push button. If the push button is pressed, the statechanges and the input becomes active (shown under Event Configuration > PortStatus).• Output - connects e.g. an alarm device that can be activated by Output buttonson the Live View page, or by an Event Type. The output will show as active(Event Configuration > Port Status) if the alarm device is activated.I/O terminalconnectorI/O terminal connector:Pin Function Description4 Transistor Output With a maximum load of 50mA and a maximum voltage of 24V DC, this out-put has an open-collector NPN transistor with the emitter connected to theGND pin. If used with an external relay, a diode must be connected in parallelwith the load, for protection against voltage transients.3 Digital Input Connect to GND to activate, or leave floating (or unconnected) to deactivate.2 3.3V DC Can be used to power auxiliary equipment, max 50mA.1 GND