GPIO Interface

The General Purpose Input Output (GPIO) interface is used to integrate Q-SYS with custom or third-party controls. The GPIO allows you to control external hardware and certain aspects of Q-SYS using external hardware.

Relay and Dry-Contact Outputs

In addition to logic-level GPIO pins, several Q SYS devices provide isolated dry-contact relay outputs for controlling external equipment that expects a simple contact closure. These relays are voltage-free contacts (NO / C / NC) and do not supply power; they are intended to switch external low-voltage control circuits (for example, screen, blind, power sequencer, or other contact closure inputs).

Dry-contact relay outputs are available on:

Use these relay contacts when you need a voltage-free contact closure interface, rather than a powered or logic-level GPIO output.