Mace DVR0804RW - Manual (Page 65)

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65
- Connection of the alarm input:
Instruction of the alarm
input end:
8 channel alarm
inputs with NO or
NC alarm(normally
open or normally
close type). The power out of the alarm sensor can be provided by the DVR(Low current only) or (External
alarm power supply)
·Instructions for alarm device power from DVR:
N/O or NC alarm outputs refer to information below..
·Instruction of the controllable +12V
Available for Low Current Power to Alarm devices.
·Instruction of RS485 A & B line:
Used to connect the A and B line of the PTZ units.
Pwr Supply, Alarm Device and DVR connection
Alarm Device
ALARMIN
GND
+12V GND Com NC
Typical
connection to
DVR alarm in.