AXIS T6112 Audio and I/O Interface

About this manual

This user manual describes several products. This means you may find instructions that aren’t applicable to your product.

Product overview

AXIS T6101 and AXIS T6112

  1. LED indicator
  2. I/O connector
  3. Audio out
  4. Audio in
  5. Network connector (PoE in)
  6. Network connector (PoE out)
  7. PoE switch (class 2 or 3)

AXIS T6112

  1. Microphone
  2. Cover
  3. Side lid
  4. Bracket mount

Solution overview

Additional settings

About the device

When you connect your device to a supported Axis camera, settings for audio and I/O will appear on the camera's webpage.


Make sure Link-Local address (ZeroConf) and IPv4 network protocols are turned on. Otherwise audio and I/O won’t work.

You can manage all the settings described in this manual through the camera's webpage.

About the camera's built-in help

You can access the built-in help from the camera’s webpage. The help provides more detailed information on the product’s features and their settings.


Add audio to your recording

  1. Turn on audio:
  2. Go to Settings > Audio and turn on Allow audio.

  3. Go to Input > Type and select your audio source.

  4. Edit the stream profile which is used for the recording:
  5. Go to Settings > Stream and click Stream profiles.

  6. Select the stream profile and click Audio.

  7. Select the checkbox and select Include.

  8. Click Save.

  9. Click Close.

Allow two-way audio communication


When you have set up two-way audio communication in the camera’s user interface, use a video management system to make use of the functionality.

This use case explains how to make it possible to communicate with audio through the product.

  1. Connect a microphone and a speaker to the product:
  2. Connect a microphone to the Audio in connector.

  3. Connect a speaker to the Audio out connector.

  1. Allow two-way audio in the camera's web page:
  2. Go to Video > Stream > Audio and include audio.

  3. Go to Audio > Device settings and make sure audio is allowed.

  4. Turn on the correct input source.

  5. If you make any changes to the input source, click Apply changes.

  6. Go to System > Plain config.

  7. Set Select group to Audio.

  8. Make sure Duplex mode is set to Full duplex


Trigger an action

  1. Go to Settings > System > Events to set up an action rule. The action rule defines when the device will perform certain actions. Action rules can be setup as scheduled, recurring, or for example, triggered by motion detection.

  2. Select what Trigger must be met to trigger the action. If you specify more than one trigger for the action rule, all of them must be met to trigger the action.

  3. Select which Action the device should perform when the conditions are met.


If you make changes to an active action rule, you have to restart the action rule for the changes to take effect.

Record video when a PIR detector senses motion

This example explains how to connect an Axis PIR detector to the product, and set up the camera to start recording when the detector senses motion.

  • Required hardware
  • 3-wire cable (ground, power, I/O)

  • Axis PIR detector


Disconnect the product from power before connecting the wires. Reconnect to power after all connections are done.

  1. Connect the wires to the product’s I/O connector
  2. Note

    For information on the I/O connector, see Connectors.

  3. Connect the ground wire to pin 1 (GND/-).

  4. Connect the power wire to pin 2 (12V DC output).

  5. Connect the I/O wire to pin 3 (I/O input).

  1. Connect the wires to the PIR detector’s I/O connector
  2. Connect the other end of the ground wire to pin 1 (GND/-).

  3. Connect the other end of the power wire to pin 2 (DC input/+).

  4. Connect the other end of the I/O wire to pin 3 (I/O output).

  1. Configure the I/O port in the camera’s webpage
  2. Go to Settings > System > I/O ports.

  3. Select Input in the Port 1 drop-down list.

  4. Give the input module a descriptive name.

  5. To make the PIR detector send a signal to the camera when it senses motion, select Closed circuit in the drop-down list.

To trigger the camera to start recording when it receives a signal from the PIR detector, you need to create an action rule in the camera’s webpage.

Detect tampering with input signal

This example explains how to trigger an alarm when the input signal has been cut or short-circuited. For more information about the I/O connector, see I/O connector.

  1. Go to Settings > System > I/O Ports and turn on Supervised I/O for one of the ports.

  1. Create an action rule:
  2. Go to Settings > System > Events and create an action rule.

  3. Type a name for the action rule.

  4. From the list of triggers, select Input Signal and then Supervised input port. Set Tampered to Yes.

  5. From the list of schedules, select Always.

  6. From the list of actions, select Send Notification and then select a recipient or create a new recipient.

  7. Click OK.


Technical issues, clues and solutions

If you can’t find what you’re looking for here, try the troubleshooting section at

The Audio tab and I/O icon are not visible in the camera’s webpage

The webpage is not updated.

Refresh the browser window. If that does not help, clear the browser cache.

Wrong camera firmware version.

Verify that the camera’s firmware version supports the product. For information about how to check the camera’s firmware version, see the camera’s user manual.

The network connection is unavailable.

Check the LED indicators on the product and compare with the LED indicators table on LED indicators.

The input and output network cables are connected to the wrong connectors.

Interchange the input and output network cables.

The Audio tab is visible but audio is not working
The camera has been disconnected from the Audio and I/O Interface.

Reconnect the camera to the Audio and I/O Interface and refresh the camera’s webpage.

The camera doesn’t start up after connecting it to the product

Hardware issue

Contact Axis support.

The midspan is not properly connected.

Make sure that all network cables are correctly connected. The Audio and I/O Interface must be connected to the camera through the midspan. Have a look at your product’s installation guide for more information.


LED indicators

Status LEDIndication

Steady green for normal operation.

AmberSteady during startup. Flashes during device software upgrade.
Amber/RedFlashes amber/red if network connection is unavailable or lost.
RedFlashes red for device software upgrade failure.


Network connector

Input: RJ45 Ethernet connector with Power over Ethernet (PoE).

Output: RJ45 Ethernet connector with Power over Ethernet (PoE).

Audio connector

  • The Axis product has the following audio connectors:
  • Audio in (pink) – 3.5 mm input for a mono microphone, or a line-in mono signal.

  • Audio out (green) – 3.5 mm output for audio (line level) that can be connected to a public address (PA) system or an active speaker with a built-in amplifier. It is recommended to use a stereo connector for audio out.

For audio in, the left channel is used from a stereo signal.

3.5 mm audio connectors

1 Tip2 Ring3 Sleeve
Audio Input

Microphone/Line in, Microphone bias voltage

Audio Output

Line out, mono

Line out, mono


I/O connector

Use the I/O connector with external devices in combination with, for example, motion detection, event triggering, and alarm notifications. In addition to the 0 V DC reference point and power (12 V DC output), the I/O connector provides the interface to:

Digital input –
For connecting devices that can toggle between an open and closed circuit, for example PIR sensors, door/window contacts, and glass break detectors.
Supervised input –
Enables possibility to detect tampering on a digital input.
Digital output –
For connecting external devices such as relays and LEDs. Connected devices can be activated by the VAPIX® Application Programming Interface, through an event or from the device’s web interface.

4-pin terminal block

DC ground10 V DC
DC output2Can be used to power auxiliary equipment.
Note: This pin can only be used as power out.
12 V DC
Max load = 50mA
Configurable (Input or Output)3–4Digital input or Supervised input – Connect to pin 1 to activate, or leave floating (unconnected) to deactivate. To use supervised input, install end-of-line resistors. See connection diagram for information about how to connect the resistors.0 to max 30 V DC
Digital output – Internally connected to pin 1 (DC ground) when active, and floating (unconnected) when inactive. If used with an inductive load, e.g., a relay, connect a diode in parallel with the load, to protect against voltage transients.0 to max 30 V DC, open drain, 100 mA


  1. DC ground
  2. DC output 12 V, max 50 mA
  3. I/O configured as supervised input
  4. I/O configured as output