GST DI-9405 Addressable Sounder Base

The GST addressable sounder base is an audio notification appliance designed to deliver localized acoustic emergency alerts directly at the detector point across commercial life safety installations. Manufactured by GST for seamless integration into addressable fire alarm loops, it functions both as a high-output audible alarm sounder and a mounting platform for compatible GST point-type fire detectors, eliminating the need for separate notification appliances and extra field wiring. The unit operates entirely on loop power to receive operating current and digital control signals directly over the two-wire circuit without requiring external power supplies. Built with digital soft-addressing capabilities for efficient system configuration, low quiescent current consumption to maximize loop device capacity, and a durable flame-retardant ceiling-mount housing, it provides a clean, space-saving evacuation notification solution for commercial offices, hotels, healthcare facilities, and educational institutions.