Instruction manual

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ALARM INPUT：
The extra device connects one for the Alarm Input (A), and the other for Alarm Input (K). Due to
ALS-7721 has the protection mechanism, obtain the power supply for your alarm equipment by
connecting from Pin 09 and Pin 10.
Attention: The Pin 09 and Pin 10 can only provide the 100mA power to other device. If the devices need to
get the more power from ALS-7721, it will show down or broke.
ALARM OUTPUT：
The extra device connects one for Alarm Output (N.C.) or Alarm Output (N.O.), and the other for
Alarm Output (COM).
Connect the power adapter through COM to provide electric power. When alarm trigger, the alarm
output will work.
NOTE：
After the alarm device set up finish, enable the function from ALS-7721. Please make reference to the chapter of
Application Setting > Event > Trigger.
PTZ (Speed Dome)：
ALS-7721 can support the PTZ camera to install. Attach the control line to RS485 connecter first,
and set up the analog camera. Please make reference to the chapter of Hardware Installation
for the detailed installation description.
NOTE：
ALS-7721 support the two types protocol: Pelco P and Pelco D.