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 Sound Ground
Please make sure the front-end device has earthed. Otherwise it may result in chip damage.
Alarm input type can be NO (normal open) or NC (normal close).
GND port
4.1
4.2
1-16
Reylay input port
C1-C8；NO1-NO8
Relay output port(NO)
R0+、R0-、R1+、R1- 、T0+、T0、T1+、T1-
Duplex RS485 port
Alarm Input Port

There are 16-ch alarm inputs and the input type can be NO or NC.

Connect the NC port of alarm detector to the NVS alarm input port (ALARM)

When using external power to provide power to the alarm device, please make it has the same ground with the NVS.

Please refer to the following figure for more information.
Alarm Output Port
8-ch alarm output (normal open contact). The external alarm device needs the battery supported.
To avoid overload to damage the device, please refer to the following sheet for relay specification information.
About A/B cable of RS485, they are used to connect to the PTZ decoder A/B cable.
Please refer to Erreur ! Source du renvoi introuvable. for alarm input module information.
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