Microprocessor Based Alarm Annunciator operates on a power supply rate of 90-270V AC/ DC and 20-60V DC. The Alarm Annunciator is a microprocessor based system that ensures optimum performance for longer period of time. The Alarm Annunciator functions with fixed sequence in a range of S1, S2, S3 or S4 and potential free dry contact inputs. Microprocessor Based Alarm Annunciator is fitted with 4 windows.