Apollo 45681-290APO Integrated Base Sounder – Slow Whoop with Isolator

Part no.

Apollo-45681-290APO

The Apollo 45681-290APO is an integrated base sounder with a slow whoop and short circuit isolator.

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Apollo Integrated Base Sounder with Slow Whoop and Isolator (Part No. 45681-290APO)

The Apollo Integrated Base Sounder with Slow Whoop and Isolator (45681-290APO) combines a base sounder, short-circuit isolator, and integral mounting base into a single compact device. Designed for indoor applications, it provides reliable audible alarm notification while simplifying installation and reducing wiring requirements. The sounder supports standard fire alarm tones as well as the Slow Whoop evacuation tone in accordance with the Dutch NEN2575 standard, making it suitable for phased evacuation strategies and specialist applications.

Key Features

Integrated base sounder, mounting base, and short-circuit isolator
Choice of two alarm tones
Two selectable volume ranges:
- 55-75 dB(A)
- 75-91 dB(A)
Emergency signal tone compliant with DIN 33404 Part 3
Constant tone option for non-fire emergency applications
Slow Whoop tone compliant with NEN2575
Individual and group addressing
Synchronisation of DIN and constant tones
Unique acoustic self-test facility
Designed for indoor use

Typical Applications

Office buildings
Hospitals and healthcare facilities
Nursing homes and care homes
Schools and universities
Hotels
Retail premises
Commercial buildings
Government facilities
Fire alarm systems requiring phased evacuation
Buildings operating to Dutch NEN2575 evacuation standards

Technical Specifications

Parameter	Specification
Product Name	Apollo Integrated Base Sounder with Slow Whoop and Isolator
Part Number	45681-290APO
Device Type	Integrated Base Sounder
Power Supply	Loop Powered
Tone Options	2 Selectable Tones
Special Tone	Slow Whoop (NEN2575)
Volume Range	55-75 dB(A) / 75-91 dB(A)
Addressing	Individual and Group Addressing
Tone Synchronisation	Yes
Acoustic Self-Test	Yes
Short-Circuit Isolator	Built-In
Application	Indoor Use

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