Individual Door Alarms - Single Wire - PTI Falcon Installation And Operation Manual

Individual Door Alarms - Single Wire

The PTI Falcon may also utilize PTI single wire door alarms rather than expandable door
alarms. The PTI single wire system uses a Door Control Unit (DCU) box at the head end
of a three conductor cable which runs from unit to unit. Each unit contains a small Door
Figure Ten
Interface Unit (DIU) circuit board mounted in a standard single gang electrical box which
connects to the three conductor cable. Figure Ten illustrates the appearance of the DCU
box and DIU boards. Use of the DIU modules allows individual identification electronically
of each door even though separate wires are not run from each door. Each DCU box can
support up to one hundred DIU modules on a single run of three conductor wire using 22
gauge wire. The PTI Falcon base unit communicates with the DCU the same way as with
an expandable door alarm mux box, and cannot tell the difference between the two.
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