Apollo Alarmsense Sounder Base for 2-Wire Fire Alarm Detector Heads 45681-510APO

The Alarmsense sounder base is the key component that allows a 2-wire Alarmsense system to combine detection and sounder output at the same ceiling position: the detector head clips into the sounder base, and the sounder base contains both the mounting and wiring connections for the 2-wire circuit and the piezoelectric sounder that activates when the system triggers.

This combination is the fundamental advantage of the Alarmsense 2-wire architecture: on a single 2-wire circuit running around a floor or zone, each position can have both a detector that monitors for fire and a sounder that activates on alarm, without separate sounder circuits and separate sounder devices. The reduction in the cable quantity and device count compared to a conventional system is the installation benefit of this architecture.

The 45681-510APO sounder base is compatible with all Alarmsense detector heads: the heat detector (55000-190APO), the optical smoke detector (55000-390APO), and other Alarmsense detectors can all be fitted in the same sounder base. This allows the correct detector type for each room to be selected independently of whether sounder output is required at that position.

For fire alarm engineers completing Alarmsense 2-wire installations across London and the UK where audible alarm output is required at detector positions, the 45681-510APO provides the standard Alarmsense sounder base.

Key Features

• Alarmsense sounder base: provides audible alarm output at the detector position
• Pairs with any Alarmsense detector head: heat, optical, or ionisation
• No separate sounder required: sounder integrated into the base
• Key 2-wire architecture component: detection and sound on one circuit
• Reduces cable quantity versus conventional detection and sounder circuits
• Compatible with Alarmsense detector heads 55000-190APO and 55000-390APO