SHIELD S-A4021 Open-Area Sounder (Red)

The SHIELD open-area sounder is an addressable acoustic notification appliance housed in a durable red enclosure, designed to deliver high-output audible emergency alerts across wide commercial spaces. Manufactured by SHIELD for seamless integration into addressable fire alarm loops, it draws both operating power and digital communication directly over the two-wire line without requiring auxiliary power supplies or additional field wiring. The device produces high-decibel audible alarm signals featuring configurable warning tones to penetrate elevated ambient background noise and ensure rapid occupant evacuation in large open environments. Built with low loop current consumption to maximize device density per circuit and a rugged flame-retardant red plastic enclosure suited for surface mounting, it provides a dependable acoustic alerting solution for warehouses, commercial halls, industrial facilities, and public venues.