System 3505  
Network  
Multiplex  
Q-Mux  
Module  
Node  
Lightning  Protection Board  
Programmer  
DDI-9E  
Direct-Wire Inputs
 
Telegraph  
1221 Radio  
Outputs  
CGRMS  
System 4000  
System 3505C
System 4000DL
CCTV
Desplex®
The Q-Mux Point Identification System permits simplified, fully programmable two-wire multiplexing. The system employs a single set of two telephone grade wires to provide RS-485 communication for up to 32 nodes over a distance of 5000 feet. Nodes require 12 volt power and can be located at the head end or in the field. ID Modules are connected to a single set of two telephone grade wires. Because the system requires so little power, numerous inputs and outputs share the wires while retaining their own individual identities. Q-Mux also allows the conversion of contact switch networks, such as relays, to addressable networks. System is immune to noise and false alarms by verifying data numerous times before processing new conditions.