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2.2 ALARM I/O
1.ALM-OUT A
2.ALM-OUT B
3.ALM-IN +
4.ALM-IN -
5.ALM-RST +
6.ALM-RST -
7.RS-485:D+
8.RS-485:D-
9.DC-OUT(5V)
10.GND
11.AUDIO-IN
12.AUDIO-OUT
1 & 2. ALARM OUT (OUTPUT): This is an alarm output trigger. Connect this to external
devices such as buzzers or lights. (
5V, 20mA
0V(Active)
)
3 & 4. ALARM IN (INPUT): This is an alarm input that can be programmed in the menu
system to active low. (
5V, 20mA
0V(Active)
)
5 & 6. ALARM RESET (INPUT): This pin connects to an alarm-clear device for clearing an
alarm. (
5V, 20mA
0V(Active)
)
7. RS-485 D+
8. RS-485 D-
9. DC OUT (5V)
10. GND: Ground contact.
11. AUDIO IN
12. AUDIO OUT: This provides the unit’s audio signal to a speaker.