Alarm I/O:
Alarm input could connect to such "fire alarm", "door open alarm" ...etc.
Alarm output could connect to "Speaker", "alarm LED" ...etc.

Description for each contact:
NA, NA, CO1, NO1, NC1
Reply: NA = no used, it is empty pin/socket.
When the DSLAM alarm = 0, CO1 and NC1 is short.
When the DSLAM alarm = 1, CO1 and NO1 is short.

By default configuration, 4 x alarm input are opened, and CO1 and NC1 are short with alarm

The maximum current and voltage for alarm module of DAS3series_RevC is restricted to 2A
24VDC or 1A 120VAC (resistive load).