
NV-DVR900 / NV-DVR1600 ver. 2.0 - User’s Manual
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ALARM CONNECTIONS
Digital Multiplexers NV-DVR900 and NV-DVR1600 feature 4 alarm relays allowing to activate
external devices. Joint for cable connection is equipped in convenient removable screw joints terminal.
First pin from left side is a ground pin (G), following pins are alarm relays 1...4.
Current-carrying capacity of each relay can not exceed 100mA. Directly to relays LED diodes can be
connected creating for each relay circuit like shown on the diagram below. If system requires
connection of external devices with high power usage additional circuits should be used e.g. with
additional relay. Alarm relays can operate as NC (Normal Close) or Normal Open (menu settings
described in chapter 3.3)
Warning: Both alarm inputs and alarm relays are not protected against lightings and current
rushes on power supply. User should provide appropriate surge protection devices.
Multiplexer
ALARM OUT 1
External circuit
Содержание NV-DVR1600
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