Axis Communications F44 Guide D'installation page 14

AXIS F44 Dual Audio Input
devices are installed in accordance with the manufacturer's
instructions. For information about regulatory requirements, see
Electromagnetic Compatibility (EMC) 2.
I/O Connector
Use with external devices in combination with, for example, tampering
alarms, motion detection, event triggering, time lapse recording and alarm
notifications. In addition to the 0 V DC reference point and power (DC
output), the I/O connector provides the interface to:
• Digital output – For connecting external devices such as relays
and LEDs. Connected devices can be activated by the VAPIX®
Application Programming Interface, output buttons on the
Live View page or by an Action Rule. The output will show as
active (shown under System Options > Ports & Devices) if
the alarm device is activated.
• Digital input – An alarm input for connecting 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 System Options > Ports & Devices).
Power Connector
2-pin terminal block for power input. Use a Safety Extra Low Voltage
(SELV) compliant limited power source (LPS) with either a rated output
power limited to ≤100 W or a rated output current limited to ≤5 A.
Audio Connector
The Axis product has the following audio connectors:
• Audio in – 3.5 mm input for two mono microphones, or two
line-in mono signals (using the supplied stereo-to-mono
adapter).
• Audio out – 3.5 mm output for audio (line level) that can be
connected to a public address (PA) system or an active speaker
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