Axis 26031r3 User Manual

The 4-pin I/O terminal connector provides the interface to: 

• 1 transistor output
• 1 digital input
• auxiliary power and GND

The 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 state 

changes and the input becomes active (shown under Event Configuration > Port 

Status).

• Output - connects e.g. an alarm device that can be activated by Output buttons 

on 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 terminal
connector

Pin Function Description
4

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 the 
GND pin. If used with an external relay, a diode must be connected in parallel 
with 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