e-mail:
voice:
360.854.9559
fax:
866.783.1742
11
SM-III Plus Installation and Operation Manual
OPERATION
Dual Monaural Mode Operation :
When the SM III Plus is armed, it will trigger in the absence of audio (see sensitiv-
ity setup) on each of the independent channels after the delay time has expired (See
delay dipswitch SW1).
The SM III Plus when triggered, will cause the following action:
1 - Switch from the main source to the backup source of each independent mon-
aural channel.
2 - Turn on the failed audio alarm LED (1 or 2) and each relay.
3 - Turn on the “Tripped” led and relay.
4 - Pulse the pulse 1 open collector for 1 second for channel (left) 1.
5 - Pulse the pulse 2 open collector for 1 second for channel (right) 2.
6 - Sound the sonalert.
When either channel returns and the restore time delay has expired, the following
action occurs:
1 - Switch from the back up source to the main source of each independent mon-
aural channel.
2 - Open the appropriate audio alarm relay(s).
WEBSITE:
Visit our web site for
product updates and
additional information.
