MTech MA-1000, Installation & Operation Manual

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10
SILENCE Yellow LED
Also known as "audible silence". Depending on the configuration of the alarm system, this function
will either silence the system's notification appliances completely, or will silence only the audible
alarm, with strobe lights continuing to flash. Audible silence allows for easier communication
amongst emergency responders while responding to an alarm. This can also be used during
construction as a means of a preliminary test, before the final full test.
SUPERVISORY Yellow LED
Supervisory (yellow light) This signal indicates that a portion of the building's fire protection system
has been disabled (such as a fire sprinkler control valve being closed and, consequentially, a
sprinkler tamper switch being activated), or, less frequently, that a lower priority initiating device has
been triggered (such as a duct smoke detector). The "Supervisory" indicator requires a "Reset" to
clear.
Local Piezo Sounder
A Piezo sounder provides separate and distinct sounds for alarm, trouble, and supervisory
conditions as follows:
Alarm - on steady
Trouble - pulse 1 second on and 1 second off
Supervisory - pulse ½ second on and ½ second off