Compare the Simplex 4099-9004, 4099-9006, and 2099-9756 manual pull stations, including their addressable or conventional system type, single-action or double-action operation, key features, applications, installation requirements, and maintenance considerations.

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.

Discover the **Apollo Discovery Manual Call Point 58200-910 and 58200-908 with isolator**, designed for reliable addressable fire alarm activation, accurate device identification, easy resetting, and improved loop protection in commercial and industrial buildings.

The **Apollo Discovery CO/Heat Multisensor Detector 58000-305** combines carbon monoxide and heat sensing to help detect smouldering and developing fires. Designed for analogue-addressable fire alarm systems, it supports flexible operating modes, accurate device identification, and dependable protection for hotels, hospitals, offices, warehouses, and other commercial facilities.

The **Apollo Discovery Heat Detector 58000-400** provides reliable analogue-addressable heat detection for commercial, industrial, and institutional applications. Designed for areas affected by dust, steam, fumes, or airborne particles, it supports accurate temperature monitoring, individual device identification, and dependable fire alarm system performance.

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.

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.

The HYFLO Fire Alarm Check Valve provides dependable one-way waterflow control, backflow prevention, and alarm activation support for wet-pipe fire sprinkler systems. Suitable for commercial buildings, warehouses, industrial facilities, hospitals, schools, and fire pump rooms, it helps protect sprinkler pipelines and support reliable fire-protection system performance.

A Fire Hose Cabinet keeps fire hoses, nozzles, valves, extinguishers, and other fire-protection equipment organized, protected, and accessible. Suitable for commercial, residential, institutional, and industrial buildings, it supports safer emergency access and efficient maintenance.

Discover the Victaulic Alarm Check Valve for wet fire sprinkler systems. Designed to help prevent reverse water flow and support alarm activation, it is a reliable solution for commercial, industrial, and building fire protection riser assemblies.