4 wire smoke detector 24vdc with relay

The 4 wire smoke detector 24vdc with relay  that initiated the alarm condition will have its red LED and relays latched until reset by panel. Two LEDs oneach detector provide local 360*visible alarmindication.They flash every six 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.