Annunciator

Standardized logic (like ISA-18.1-1979) defines how the light flashes and how the buzzer behaves.

Accepts normally open (NO) or normally closed (NC) dry contact inputs. annunciator

An operator pushes an "ACK" button to silence the horn, while the light changes from flashing to solid-on. Reset: Once the fault is cleared, the light turns off. 3. Key Features & Functions Standardized logic (like ISA-18

An internal buzzer or external hooter sounds. or loss of flow.

Identifies which alarm occurred first in a series of failures, aiding in root-cause analysis.

Annunciators monitor field sensors (switches) that detect changes such as high temperature, low pressure, or loss of flow.