The device is photoelectronic detector uses a
state of-the-art optical sensing chamber. This
detector is designed to provide open area
protection and to be used with most conventional
fire alarm control panel. Two LEDs on each
detector provide local 360° visible alarm
indication. They flash every 3~5 seconds
indicating that power is applied and the detector
is working properly. The LEDs latch on in alarm.
LEDs will be off when a trouble condition exists
indicating that the detector sensitivity is outside
the listed limit. The alarm can be reset only by a
momentary power interruption.