How to Setup 2-Way Voice on an Interlogix Concord 4

Can two or more interrogator boards be wired to one Interlogix Concord panel for Alarm.com Two-Way Voice?

Yes. It is possible to install two interrogator units connected to one Interlogix Concord panel. The wires going to the inputs of the second interrogator can be connected either directly to the outputs of the panel and GSM module (parallel configuration), or they can be connected to the inputs of the first interrogator (in series). Ensure that the maximum length of the wire run from the panel and GSM module to the 2nd interrogator does not exceed 150 feet.

Important : When wiring the interrogator boards, use 18 or 22 gauge wire.

There are two options when wiring multiple interrogator boards to one Interlogix Concord panel:

  1. Option A: The Interrogator board is wired directly to the dongle (in parallel).
  2. Option B: The Interrogator board is wired to the second interrogator board (in series).