Avtech AVC799B User Manual page 66

‧ For 4CH Models
PIN FUNCTION
1~4
ALARM INPUT
5
GND
6
EXTERNAL ALARM COM
7
EXTERNAL ALARM NO
8
RS485-A
9
RS485-B
10~11
GND
Siren:
When the DVR is triggered by alarm or motion, the COM
connects with NO and the siren with strobe starts wailing and
flashing.
Magnetic Contact:
When the magnetic contact is opened, the alarm will be
triggered and the recording is on.
Connect ALARM INPUT (PIN1 – 4) and GND (PIN5) connector with wires. Once an alarm is
triggered, the DVR will start recording and the buzzer will be on.
PIN Alarm Corresponding video channel
PIN 1 1 CH1
PIN 2 2 CH2
PIN 3 3 CH3
PIN 4 4 CH4
*
GROUND
Under the normal operation, COM disconnects with NO. But when any alarm is triggered,
COM connects with NO.
Attention: The voltage restriction is under DC24V 1A.
Under the normal operation, COM disconnects with NO. But when any alarm is triggered,
COM connects with NO.
Attention: The voltage restriction is under DC24V 1A.
GROUND
60
APPENDIX 2 PIN CONFIGURATION
DESCRIPTION