Connecting Alarm Inputs/Outputs; Figure 2-5 Rs232 Port Connection; Figure 2-6 Alarm Input/Output Connector Strips - Honeywell HRSD40F User Manual

Connecting Alarm Inputs/Outputs

AI 1 to 4 (Alarm In)
You can use external devices to signal the DVR to react to events.
Mechanical or electrical switches can be wired to the AI (Alarm In) and GND (Ground)
connectors. You can use external devices to signal the DVR to react to events.
Mechanical switches can be used to open/close the circuit between AI and GND to
trigger an event. You can also use electrical switches to apply electric voltage to an AI
(0V to 3.3V) to trigger an alarm with common ground. An electric voltage of 2.4~3.3
VDC for 0.5 seconds is required to trigger an alarm on NC (Normally Closed) Alarm In.
For NO (Normally Open) Alarm In, an electric voltage below 0.3 VDC for at least 0.5
seconds is required to trigger an alarm. See
alarm input.
G (Ground)
Connect the ground side of the Alarm input and/or alarm output to the G connector.
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Figure 2-5 RS232 Port Connection
Note To make connections on the Alarm Connector Strip,
press and hold the button and insert the wire in the hole
below the button. After releasing the button, tug gently
on the wire to make certain it is connected.
To disconnect a wire, press and hold the button above
the wire and pull out the wire.
Figure 2-6 Alarm Input/Output Connector Strips
AI1 AI2 AI3 AI4 G ARI
NO C NC G
Chapter 3, Configuration
HRSD40F DVR User Guide
for configuring