Free Delivery on all orders over £99*

Adastra V24-VR 100V Volume Control with 24V Relay

£2999
The RRP is the manufacturer's recommended retail price of the item.
Limited Stock
We are an Independent UK Company
Price match. Found it cheaper? Contact us
Trade Discount Available
Description

The Adastra V24-VR is a 100V line volume control (also called an attenuator) built for commercial and public address sound systems. It handles up to 24W and gives you attenuation across 10 steps, made up of 8 x 3dB steps and 2 x 6dB steps, so you can set levels in individual zones without affecting the rest of the system. It comes complete with a plastic surface mount back box, so everything you need to fit it is in the box.

The main feature here is the fitted 24V relay, rated at 50mA. This lets the attenuator be bypassed to full volume when triggered from a fire alarm panel, which is a common requirement for voice alarm and emergency announcement setups. If an alarm signal is received, the volume control is overridden so evacuation messages are heard clearly regardless of how the local level was set. The frequency response runs from 35Hz to 20kHz, covering the range needed for speech and general background music.

The faceplate is ABS with a matching plastic knob, giving a plain finish that suits offices, shops, schools and similar spaces. Assembled dimensions are 85 x 85 x 75mm including the back box, with a mounting depth of 47mm, so check you have enough clearance behind the wall surface before fitting. This is a straightforward, practical part for anyone specifying or maintaining a 100V distributed audio system that needs zone-level control alongside fire alarm bypass.

Specification
Attenuation 3dB per graduation
Frequency response 35Hz - 20kHz
Relay 24V, 50mA
Dimensions (assembled) 85mm x 85mm x 75mm (inc. back bo x )
Mounting depth 47mm
Downloads

Product Manual

Frequently Asked

What does the 24V relay do?

The 24V relay allows the attenuator to be bypassed to full volume when triggered from a fire alarm panel. This makes sure evacuation messages are heard at full level regardless of the local volume setting.

How many attenuation steps does it have?

It offers 10 steps in total: 8 x 3dB steps and 2 x 6dB steps, giving you flexible level control per zone.

Is this suitable for 100V line systems?

Yes. It is designed for 100V line audio systems and handles up to 24W, making it suitable for public address and background music installs.

Does it come with a back box?

Yes. It is supplied complete with a plastic surface mount back box, so you have everything needed to fit it.

What are the mounting dimensions?

Assembled it measures 85 x 85 x 75mm including the back box, with a mounting depth of 47mm.

What is the frequency response?

The frequency response runs from 35Hz to 20kHz, covering speech and general music use.

Shipping & Returns

Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

To arrange a return, call us on 020 8149 5199 or use our contact page.

See it lit, in person

Lighting looks different in a real room. Come and see our range at our showrooms in Birmingham, Hong Kong and Dubai, or talk to our design team wherever you are.

Niori lighting showroom trailer video with closeups of alabaster lighting

Why Niori

Over 20 years lighting homes worldwide

We are a specialist lighting and mirror retailer with showrooms in Birmingham, Hong Kong and Dubai, shipping to customers around the world. Our own design team is here to help, from first idea to final fitting.

Genuine products

An authorised stockist

Every product arrives brand new with the full manufacturer warranty. Found it cheaper elsewhere? Ask us about a price match.

Ordering with us

Free delivery over £99

Free delivery on orders over £99, in the UK and worldwide. Easy returns within 14 days, subject to our returns policy. Full manufacturer warranty included.

Design help

Not sure what you need?

Our design team can help you plan your lighting, share photos and videos of stock, and send samples worldwide. Book a showroom visit in Birmingham, Hong Kong or Dubai, or ask about our lighting design service.

You Might Also Like

Recommended For You

    Our Reviews

    From first click to final installation, our customers share how Niori lights up their spaces. Read their words and envision what’s possible for yours.

    Featured Projects

    Step into our portfolio and see how we transform homes, restaurants, and commercial spaces and more, worldwide. Click here for a closer look at our latest projects.

    Description

    The Adastra V24-VR is a 100V line volume control (also called an attenuator) built for commercial and public address sound systems. It handles up to 24W and gives you attenuation across 10 steps, made up of 8 x 3dB steps and 2 x 6dB steps, so you can set levels in individual zones without affecting the rest of the system. It comes complete with a plastic surface mount back box, so everything you need to fit it is in the box.

    The main feature here is the fitted 24V relay, rated at 50mA. This lets the attenuator be bypassed to full volume when triggered from a fire alarm panel, which is a common requirement for voice alarm and emergency announcement setups. If an alarm signal is received, the volume control is overridden so evacuation messages are heard clearly regardless of how the local level was set. The frequency response runs from 35Hz to 20kHz, covering the range needed for speech and general background music.

    The faceplate is ABS with a matching plastic knob, giving a plain finish that suits offices, shops, schools and similar spaces. Assembled dimensions are 85 x 85 x 75mm including the back box, with a mounting depth of 47mm, so check you have enough clearance behind the wall surface before fitting. This is a straightforward, practical part for anyone specifying or maintaining a 100V distributed audio system that needs zone-level control alongside fire alarm bypass.

    Specification
    Attenuation 3dB per graduation
    Frequency response 35Hz - 20kHz
    Relay 24V, 50mA
    Dimensions (assembled) 85mm x 85mm x 75mm (inc. back bo x )
    Mounting depth 47mm
    Downloads

    Product Manual

    Frequently Asked

    What does the 24V relay do?

    The 24V relay allows the attenuator to be bypassed to full volume when triggered from a fire alarm panel. This makes sure evacuation messages are heard at full level regardless of the local volume setting.

    How many attenuation steps does it have?

    It offers 10 steps in total: 8 x 3dB steps and 2 x 6dB steps, giving you flexible level control per zone.

    Is this suitable for 100V line systems?

    Yes. It is designed for 100V line audio systems and handles up to 24W, making it suitable for public address and background music installs.

    Does it come with a back box?

    Yes. It is supplied complete with a plastic surface mount back box, so you have everything needed to fit it.

    What are the mounting dimensions?

    Assembled it measures 85 x 85 x 75mm including the back box, with a mounting depth of 47mm.

    What is the frequency response?

    The frequency response runs from 35Hz to 20kHz, covering speech and general music use.

    Shipping & Returns

    Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

    Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

    To arrange a return, call us on 020 8149 5199 or use our contact page.