Interlogix Simon XT Tabletop Installation Manual - Manual (Page 35)

Chapter 3:
Simon XT TableTop Control Panel Installation Manual 29
9 - Sirens with this setting sound alarms, arming level beeps, status beeps,
and trouble beeps.
10 - Sirens with this setting only sound alarms.
2. Set the powerhorn house code to one above the panel house code.
3. Plug the powerhorn module into a wall outlet.