Expansion module

The D8125 Addressable Expansion Module works with the D9127U or D9127T POPIT Modules to provide multiplex technology that combines zone or point supervision with individual device addressing on one pair of wires. Use the D8125 to provide expansion beyond the standard number of control panel zones, up to a total of 238 points. Each D8125 module can fully supervise 119 D9127U or D9127T POPIT Modules.

System overview

Each D8125 installs in the control panel enclosure or in an adjacent approved enclosure. Future system expansion is very economical as D9127U or D9127T POPITs can be spliced in anywhere along the two-wire data expansion loop from the D8125 module. The D9127 is a compact, addressable device that is suitable for applications where specifications call for point identification from each initiating device or series of devices. The units are small, and easily installed in standard outlet boxes, above false ceilings, closets, or other accessible locations. The D8125 includes a 33 k? end-of-line (EOL) resistor. Install the resistor at the farthest point on the loop for proper supervision.

• Provides point identification of initiating devices
• Supervises wiring to devices for circuit integrity
• Expands the number of points in the system
• Compact size
• Terminal connections for reliability

Key Specifications

Parts included with this product

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