Honeywell Domonial User Manual page 14

The "PANIC" function is operative even when your system is not armed. The sounder stops by itself
after 30 second but you can stop it manually by pressing
Stopping the sounder does not interrupt the transmission to the ARC station.
ASSISTANCE ALERT KEY
This key enables you to call for assistance from one of your keyholders.
Press key :
The indicator light comes on when you release the button.
The ARC is alerted.
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