EverFocus DVR-900 Instruction Manual page 9

ALARM I/O: (Refer pin assignment in Appendix-C, Page 44)
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ALM-INPUT : Normally Open (N.O) or Normally Close (N.C) type alarm sensor input.
ALM-OUTPUT : Two-way contact relay alarm output. In normal condition, this N.C. contact
RS232 connector : D-Sub 9 pins connector to RS232 ports for remote control.
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RS485 connector : 2 x RJ-45 connectors for RS-485 remote control, high impedance
LAN Connector : RJ-45 LAN connector for internal 10MBit LAN interface.
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FAN: Cooling fan, do not cover.
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The Alarm Input can be selected as N.O or N.C input in the setup
menu. When an alarm occurs, alarm recording will automatically start.
shorted to ALM-COM. In alarm status, it is open between ALM-NC and
ALM-COM, N.O. is shorted to ALM-COM.
Supported are keyboards KS-KBK, KS-KBJ.
Maximum units in RS-485 network are 32.
Following products are compatible in RS-485 network:
- DVR´s
- Keyboards KS-KBJ (with 3 - axis Joystick, DVR and telemetry control)
KS-KBK (only DVR control)
Back Panel Connections
DVR 400H, DVR 900, DVR 1600
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