Mini PIR Alarm (490-0425) Operation Faxback Doc. # 6601 To use the alarm to announce someone's presence, set CHIME/OFF/ALARM to CHIME. The chime sounds when the sensor detects movement within the detection angle. To use the alarm as a motion alarm, set CHIME/OFF/ALARM to ALARM. The alarm alerts you when the sensor detects movement within the detection angle. To turn off the alarm, set CHIME/OFF/ALARM to OFF. (br/all-6/27/94)