Q-Mux TCU-8 Node

Product Information

Q-Mux TCU-8 Node

Q-Mux TCU-8 Node

The Q-Mux is a low cost multiplex system. Two wires are used to power and communicate serially to the ID modules (IDMs). Commands from the QNode to the ID modules take the form of modulating the Buss voltages between 0 and 10v. The data returned from the modules is in the form of increased Buss current. Each Q-node can control up to 99 mix/matched ID modules. Up to 32 Q-Nodes may be used in one system. Total range of the Q-Mux system is 5,000 feet from the System 3505 Prism LX™ and or VersAlarm™ to the last Q-Node and up to 5,000 feet from the QNode to the last ID module. ID modules may be set to any address from 1 to 99. Addresses are stored on an internal EEPROM and can be changed by the Q-Mux Programmer.

Product Description:

The Q-MUX Node is a microprocessor based central polling controller Buss interface. The Q-MUX Node drives the Multiplex loop, and communicates with the modules along the buss. It communicates with the master controller through serial port communication.

The Q-MUX Node sends commands to, and receives data from, the ID modules. In turn, it sends the data to, and receives commands from, the System 3505 Prism LX™. Up to 32 Q-MUX Nodes may be installed in one system. Total wire run from the System 3505 Prism LX™ to the last Q-MUX Node is 5,000 ft. with 24 AWG.


The Q-MUX Node can be set to any address from 1-32. The address is stored internally in an EEPROM. It is shipped pre-programmed to address #1. Changing the Q-Node address is accomplished with a computer and the Q-Node Utility program.


  • Range: 5000 ft. from System 3505 Prism LX™ to node; additional 5000 ft. node to ID module.
  • Addressable and programmable
  • Low cost multiplex system
  • High noise immunity
  • Permits numerous inputs & outputs to share a single pair of wires.
  • NFP-72 Compliant
  • Will work with Systems 3505 Prism LX™; VersAlarm™ or MeshSentry™.


Digitize Part Number: 425183-0004

Input Power: 10-14.V, 80 mA typical. 300 mA. Max (on T-Buss™ short).

Buss Capacity: 63 modules

Dimensions: Height: 2.75 in., Width: 2.75 in., Depth: 1.5 in.

Ports: 1 RS-232 Port 1 RS-485 Port 1 Firmware Programming Port

Operating Temperature: 32°F-165°F

Operating Humidity: 0-95%, non-condensing

Operating Environment: Install in a dry, indoor environment.

Indicators: 2 sets of six leds. One set on the component side of pcb, on set on the solder side of the pcb. Leds indicate the presence of communication on the RS-485 port, the RS-232 port and the TBUSS.