xGen Installation & Programming Guide 13
Cable requirements
The system RS-485 communication bus is used to connect keypads and in-
and output expanders to the xGen intrusion panel.
• Belden 8723, 2 pair twisted, shielded cable is recommended.
• 800 m total cable run on system.
• Max. 800 m from remote device to xGen control panel.
• Max. 32 devices plus panel.
• Max. 16 keypads, as part of the 32 device limit.
• Recommend a separate power supply for keypads 100 m away. If the keypad
is powered with a separate power supply, do not connect “12 V” from the
system LAN. Connect “+” of the local power supply to “+” on the keypad, and
connect 0 volts from the power supply and 0 volts from the system LAN+ to
the keypad terminal marked “D−”.
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