https://knowledge.keenfinity-group.com/intrusion-alarm-systems/article/how-to-work-with-the-d279a-sound-and-led-responses
How to work with the D279A sound and LED responses.
Faulted Delay or Instant zones on D279/D279A Short tones are generated when pressing keypad buttons while the delay or instant zones are faulted, i...
how to workwith thesoundledresponses