Fire detection systems

The BiWire base sounder and base sounder visual alarm device (VAD), can be used both with a detector or as a standalone device. The base sounder and base sounder VAD incorporate a detector mounting base, allowing a detector to be fitted directly to the base or, alternatively, a cover plate can be used to provide a dedicated, discreet, standalone device.
Both options are suited to applications where ambient noise is high, including schools, retail units, healthcare, offices and nursing homes, and a wide variety of industrial environments.

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Overview Models

Versatile

Use base sounder or VAD with or without detector

Compliant

EN54-3 (base sounder) & EN54-23 (VAD)

Adaptable

Suitable for commercial or industrial installations

Powerful enough to use alone, flexible enough to use with a detector

The base sounder range has been designed with the installer in mind. The first fix base reduces installation time when adding a detector, and simple cover plates can be quickly fitted where a detector isn't necessary. Volume and tone are simply set by dip switches on the device.

Clear visual notification during an emergency; approved to EN54-23

VADs provide a clear signal of evacuation for any occupant that may not be alerted by an audible alarm due to working in a noisy environment like a factory, if they are hard of hearing or increasingly in office and educational environments due to wearing headphones.

Learn more about EN54-23 in our quick guide

BiWire Flexi - Your simpler, cheaper, more versatile choice for new & old fire projects

Whether fitting out a building extension, retrofitting an outdated system or looking to benefit from the cost and time benefits of two-wire technology on a new build and want to utilise certain conventional devices; BiWire Flexi gives you the power to adapt the system to the site.

Discover Eaton's adaptable BiWire Flexi fire system

Be less conventional with Eaton's range of two-wire fire alarm devices

From the world's leading supplier of fire notification devices, Eaton's range of 2-wire fire alarm devices helps you to maximise the BiWire system. From our 5 in 1 detector to our VAD compliant sounder beacon base, each device has been chosen specifically to be part of the BiWire device range for their quality, ease of use and low installation cost.

Specifications

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Product codes

Base Sounder First Fix	EF5021BWS
Base Sounder VAD First Fix	EF5021BWSB
Cover Plate (Pack of 5)	CASC

Technical specifications

Description:	Base Sounder and Base Sounder VAD
Supply Voltage (Alarm):	18 - 25.5Vdc
Supply Voltage (Standby):	18 - 25.5Vdc
Cable Size / Type:	0.5-2.5mm / FIRETUF, FP200 or MICC
Standby Current:	<15µA
Current (High Volume):	Sounder Only = 4.7mA, AV = 11mA
Current (Low Volume):	Sounder Only = 2.6mA, AV = 8.7mA
Sound Output (High Volume):	90 +/- 3dB (A)
Sounder Output (Low Volume):	80 +/- 3dB (A)
Operating Temperature:	-10°C to +55°C (93% + 3%RH)
Material:	ABS / PC FR Plastic
Environmental Category:	IP21C
Tones:	3
Flash Rate:	0.5Hz (Not applicable to EF5021BWS)
Flash On Period:	60ms (Not applicable to EF5021BWS)
Dimensions (Dia x D)	115mm x 44mm

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BiWire two-wire detector base sounder VAD