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Part 1 – Introduction
11
input from an electrical switch, the signal must be
higher than 4.3V from an NC switch or less than
0.3V from an NO switch and must last for longer
than 0.5 seconds.
• Audio
- O (Out): Connect an amplier to this port (line
out). This device does not feature a built-in audio
amplier unit and therefore requires the user to
purchase a separate speaker system with a built-in
amplier.
- I (In): Connect an audio source to this port. (Line in)
• Check your local laws and regulations on making
video or audio recordings. The user will be held
liable for any violation of the law.
• When switching over from 12 VDC to PoE as the
power source, the system will be rebooted once the
power adapter is disconnected.
• Organize the power cable so that it will not cause
people to trip over or become damaged from chairs,
cabinets, desks, and other objects in the vicinity. Do
not run the power cable underneath carpet or a rug
or plug the cable into a power outlet shared by a
number of other devices.
• Do not remove the SD memory card while the
system is in operation. Removing the card while
the system is in operation can cause the system
to malfunction and/or corrupt data stored on the
SD memory card.
• An SD memory card is a consumable product
with a nite service life. Prolonged use will
damage the card's memory sectors and result
in data loss or memory card failure. Test the SD
memory card regularly and replace it whenever
necessary.
I/O Connector
Alarm
In Alarm In
GND Grounding
Out
Alarm Out (Active Low -
Open Collector Output)
Audio
In Audio In
GND Grounding
Out Audio Out
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