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 **Apollo Addressable XPERT 7 Base 45681-210** provides secure detector mounting, organized loop wiring, and accurate address configuration for compatible Apollo fire detection systems. Its XPERT addressing technology helps simplify detector replacement, reduce addressing errors, and support reliable fire alarm monitoring in commercial, residential, institutional, and industrial buildings.

The Apollo Discovery Ionisation Smoke Detector 58000-500 is an analogue-addressable fire detector designed to detect smoke particles from fast-burning fires. It supports selectable response modes, accurate device identification, and reliable integration with compatible Apollo fire alarm systems.

The **Apollo Discovery Optical/Heat Multisensor Detector 58000-700** combines optical smoke and thermistor heat sensing to support reliable early fire detection, flexible operating modes, accurate device identification, and improved false alarm management in commercial, residential, healthcare, hospitality, and industrial buildings.