DISCOVERY SOUNDER VAD BASE CAT. O (WHITE FLASH) – ISOLATING 45681-700APO

Part no.

Apollo-45681-700APO

The Apollo Discovery Sounder VAD Base with Isolator (45681-700APO) combines a loop-powered sounder, an EN54-23 certified Visual Alarm Device (VAD), and an intelligent mounting base into a single addressable unit.

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Apollo Discovery Sounder VAD Base with Isolator (Part No. 45681-700APO)

The Apollo Discovery Sounder VAD Base with Isolator (45681-700APO) combines a loop-powered sounder, an EN54-23 certified Visual Alarm Device (VAD), and an intelligent mounting base into a single addressable unit. Designed to make full use of the advanced Apollo Discovery protocol, the device provides both audible and visual fire alarm notification while offering flexible configuration and simplified commissioning.

For faster installation and maintenance, engineers can use an Apollo Magnetic Wand to locally test and adjust the sounder VAD without needing to access the fire alarm control panel. Additionally, the integrated short-circuit isolator helps maintain loop integrity by automatically isolating faulted sections of the circuit, reducing the impact of wiring faults on the wider fire detection system.

The unit supports individually configurable sound output levels directly from the control panel, enabling system designers to tailor alarm performance to different environments. Furthermore, users can select from 15 pairs of alarm tones, including IMO Code 1A General Emergency Alarm and IMO Code 2 All Clear, making the device particularly suitable for marine, offshore, industrial, and commercial applications.

Key Features

Combined sounder and visual alarm device (VAD)
EN54-23 certified visual alarm device
Loop-powered operation
Built-in short-circuit isolator
Flash rate of 0.5Hz
Individual sounder volume control from the fire alarm panel
15 selectable tone pairs
Includes IMO Code 1A General Emergency Alarm tone
Includes IMO Code 2 All Clear tone
Local testing and adjustment using a Magnetic Wand
Suitable for Discovery protocol systems
Intelligent mounting base design

Typical Applications

The Apollo 45681-700APO is suitable for:

Commercial buildings
Marine vessels
Offshore platforms
Industrial facilities
Healthcare environments
Educational establishments
Hotels
Retail premises
Government buildings
High-occupancy public spaces

Technical Specifications

Parameter	Specification
Product Name	Apollo Discovery Sounder VAD Base with Isolator
Part Number	45681-700APO
Device Type	Sounder VAD Base
Protocol	Apollo Discovery
Power Supply	Loop Powered
VAD Certification	EN54-23
Flash Rate	0.5Hz
Tone Options	15 Tone Pairs
Volume Control	Panel Configurable
Built-In Isolator	Yes
Local Testing	Magnetic Wand
IMO Tones	Code 1A and Code 2

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