Axis Communications 210 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 e-mail, 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.

4

Transistor Output

With a maximum load of 100mA and a maximum voltage of 24V DC, this output 
has an open-collector NPN transistor with the emitter connected to pin 1 (GND). 
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

Auxiliary DC Power Input

7-20 VDC/max 5W. Electrically connected in parallel with the PS-K power 
connector, this pin provides an auxiliary connector for mains power to the unit. If 
the unit is powered via this pin, a fuse should be used (rating: 1A Slow).

 

This pin can also be used to power auxiliary equipment, max 100mA, but note that 
this is not possible when the AXIS 210A/AXIS 211/211A is powered by PoE.

1

GND

Terminal connector. Note that the pins 
are numbered 1-4, right to left.

DC-Iris control cable 
(AXIS 211/211A only).

4 3 2 1

Audio Output/Input
(AXIS 210A/211A only).