User's Manual
Page 14 AXIS 211W Installation Guide
Unit connectors
Antenna connector - Reverse SMA connector for antenna.
Network connector -  RJ-45 Ethernet connector. Supports Power over Ethernet. Using 
shielded cables is recommended.
Power connector - Mini DC connector. 7 - 20V DC, max 5W. See product label for 
± 
connection.
Audio in - 3.5mm input for a mono microphone, or a line-in mono signal (left channel is 
used from a stereo signal).
Audio out - Audio output (line level) that can be connected to a public address (PA) system 
or an active speaker with a built-in amplifier. A pair of headphones can also be attached. A 
stereo connector must be used for the audio out.
I/O terminal connector - Used in applications for e.g. 
motion detection, event triggering, time lapse recording 
and alarm notifications. It provides the interface to: 
• 1 transistor output - For connecting external 
devices such as relays and LEDs. Connected 
devices can be activated by AXIS VAPIX AP, 
output buttons on the Live View page or by 
an Event Type. The output will show as 
active (shown under Event Configuration > 
Port Status) if the alarm device is activated.
• 1 digital input - An alarm input for connect-
ing devices that can toggle between an open and closed circuit, for example: 
PIRs, door/window contacts, glass break detectors, etc. When a signal is received 
the state changes and the input becomes active (shown under Event Configura-
tion > Port Status).
• Auxiliary power and GND
Function Pin number Notes Specifications
GND 1
5VDC Power 2 Can be used to power auxiliary equipment 
(7-20VDC) or as a +5VDC (100mA) output. 
Max load = 100mA
Digital Input 3 Connect to GND to activate, or leave float-
ing (or unconnected) to deactivate.
Must not be exposed to 
voltages greater than 
20VDC
Transistor 
Output
4 Uses 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 pro-
tection against voltage transients.
Max load = 100mA
Max voltage = 24VDC 
(to the transistor)
Pin 1
Pin 3
Pin 2
Pin 4
Terminal connector. Note that the pins 
are numbered 1-4, right to left.










