Ai 1 To 16 (Alarm In); Gnd (Ground); Ao 1 To 4 (Alarm Out); Figure 2-8 Alarm Output Connector Strips - Honeywell HRHD4+ User Manual

Installation

AI 1 to 16 (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.
The threshold voltage is 4.3V and should be stable at least 0.5 seconds to be detected.
See

GND (Ground)

Connect the ground side of the Alarm input and/or Alarm output to the GND
connector.

AO 1 TO 4 (Alarm Out)

The DVR can activate external devices such as buzzers or lights. Connect the device
to the AO (Alarm Out) and GND (Ground) connectors. AO is an active low open
collector output which sinks 5mA@12V and 30 mA@5V. See
for configuring alarm output.
Rev 1.00
Chapter 3, Configuration
Note All the connectors marked GND are common.
Figure 2-8
for configuring alarm input.
Alarm Output Connector Strips
10
Chapter 3, Configuration
Document 900.0258
09/04