An improved duress feature preferably uses {TAIL ~ a modified tumbler wheel assembly} and {HEAD ~ a duress switch} to trigger the alarm 
An improved duress feature preferably uses { TAIL ~ a modified tumbler wheel assembly } and { HEAD ~ a duress switch } to trigger the alarm
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH