The **Apollo Discovery Open-Area Voice Alarm Devices** provide clear voice messages, alarm tones, and optional visual indication for reliable emergency notification in commercial, residential, and industrial fire alarm systems.

The **Apollo Discovery Category O Sounder VAD Base with Isolator 45681-700** combines audible alarm notification, white-flash visual warning, detector mounting, and short-circuit isolation in one compact addressable device. Suitable for commercial, healthcare, educational, residential, and industrial applications, it helps improve occupant notification, protect the fire alarm loop, and support a cleaner installation.

The Simplex 4099-9004 Single-Action Addressable Manual Pull Station provides fast and reliable manual fire alarm activation for commercial, institutional, and industrial buildings. It features a clear pull-down mechanism, individual device addressing, and compatibility with Simplex IDNet and MAPNET II fire alarm systems.