Acard ADR-7604H, Руководство пользователя

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connected to signals Input1~Input4 (port7~port10) on the DVR device. Mechanical or
electrical switches can be connected to the alarm input and ground ports to the DVR.
Please refer to the picture below for specific connections.
2.2 Relay(Alarm) Output
A general relay device is used here and the alarm output port will not be connected to a
high current load. The 2 alarm outputs can be connected through Output N.C (Port 4) and
Output N.O (Port 6) to the external alarm device, wherein the ground line of the external
alarm device is connected to Output COM (Port5). Please refer to the picture below for
specific connections.
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