JVC VR-609 - Manual (Page 28)

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VR-609
3.4 External Product Connections and Applications
3.4.1 External Product Connection of ALARM INPUT and Application
There are 9 alarm jacks for external devices.
Able to set-up REC ON/ OFF and Digital out motion according to ALARM IN signals.
The resistance of a makeup point should be set to 500 ohms or less. !
Connection Diagram
Circuit Diagram
Common GND Internal Circuit
SW
1 3
5V
ALARM IN
5V
47kΩ
GND 1 2 3 4 5 6 7 8 9