if you access the end station try the following
remove mains
remove battery
put a link between 0v and tamper on the siren out pins on the pcb
remove connections to zone 1 (1001)
defeat panel tamper switch, put the end station panel screw in place
then power the panel up bay battery first then mains
enter default code 1234 (or12345)
this should silence the system
then ESC
then enter default engineers code 1122 or 112233 depends on software version
then ENT
enter engineer code again that should default back to factory
BE AWARE BY DOING THIS YOU NOW HAVE TO REPROG THE WHOLE SYSTEM
do not do this unless you have either an engineers book or have knowledge of the system
no name
January 2012