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ESP MagDuo 2-Wire Fire Alarm Sounder - Red

£2699
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Description

The ESP MagDuo is a 2-wire fire alarm sounder designed for ceiling mounting in commercial and residential fire detection systems. The unit measures 150mm diameter and 80mm depth, with a red ABS housing and black grille apertures around the perimeter that allow the sound to project 360 degrees across a room or corridor. The built-in end-of-line function eliminates the need for external resistors when wiring the device into conventional fire alarm panels.

Designed for offices, residential buildings, schools, care homes and retail premises, the MagDuo connects via standard 2-core fire-rated cable and operates on typical 12-24V DC alarm panel outputs. The volume adjustment dial on the underside of the sounder allows the output to be set between approximately 85dB and 102dB at 1 metre, making it suitable for both small rooms requiring lower output and larger open-plan areas needing higher coverage. The device wiring base is included and separates from the sounder head for easier cable termination during installation.

The red housing carries an IP21C ingress protection rating, making the sounder suitable for most indoor environments but not for outdoor exposure or high-moisture areas such as shower rooms or external canopies. The ABS construction keeps the installed weight to 250g, which is light enough for most standard ceiling tiles in suspended grid systems without requiring additional support. The MagDuo is one component in ESP's wider range of fire detection devices and is typically specified alongside compatible detectors and call points on the same zone wiring.

Specification
Product Net Weight (KG) 0.25
Product Gross Weight (KG) 0.3
Outer Gross Weight (KG) 0.25
Product Length (mm) 150
Product Width (mm) 150
Product Height (mm) 80
Outer Length (mm) 150
Outer Width (mm) 150
Outer Height (mm) 80
Downloads

Product Specification Sheet

Product Manual

Frequently Asked

What does 2-wire mean?

The sounder connects to the fire alarm panel using just two cores of cable, carrying both power and the trigger signal on the same pair. This simplifies wiring compared to 4-wire devices that need separate power and signal pairs.

What is the built-in end-of-line function?

The sounder includes an internal resistor that allows the fire alarm panel to monitor the circuit and detect cable faults. Without this, you would need to fit a separate end-of-line resistor at the last device on the zone.

Can the volume be adjusted after installation?

Yes. A dial on the underside of the sounder adjusts the output between approximately 85dB and 102dB at 1 metre. This can be set during commissioning and re-adjusted later if needed.

Is it suitable for outdoor use?

No. The IP21C rating protects against solid objects larger than 12.5mm and vertical drips of water, but the MagDuo is intended for indoor use only. It is not rated for direct weather exposure or high-moisture environments like shower rooms.

Shipping & Returns

Free worldwide delivery

Free worldwide delivery on all orders over £99. International orders for third-party brand products may be subject to an additional courier surcharge based on volumetric weight, particularly on larger lighting fixtures — if a surcharge applies, our team will email you with the amount before dispatch and you can proceed or cancel for a full refund. See full delivery terms.

Returns

30-day returns window from delivery. As all our products are electrical or lighting goods, returned items must be inspected and recertified by a qualified electrician before resale — the cost of this inspection (25–40% of the item value) is deducted from your refund. Customers pay return shipping. Made-to-order, special-order and clearance items cannot be returned. See full returns policy.

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    Description

    The ESP MagDuo is a 2-wire fire alarm sounder designed for ceiling mounting in commercial and residential fire detection systems. The unit measures 150mm diameter and 80mm depth, with a red ABS housing and black grille apertures around the perimeter that allow the sound to project 360 degrees across a room or corridor. The built-in end-of-line function eliminates the need for external resistors when wiring the device into conventional fire alarm panels.

    Designed for offices, residential buildings, schools, care homes and retail premises, the MagDuo connects via standard 2-core fire-rated cable and operates on typical 12-24V DC alarm panel outputs. The volume adjustment dial on the underside of the sounder allows the output to be set between approximately 85dB and 102dB at 1 metre, making it suitable for both small rooms requiring lower output and larger open-plan areas needing higher coverage. The device wiring base is included and separates from the sounder head for easier cable termination during installation.

    The red housing carries an IP21C ingress protection rating, making the sounder suitable for most indoor environments but not for outdoor exposure or high-moisture areas such as shower rooms or external canopies. The ABS construction keeps the installed weight to 250g, which is light enough for most standard ceiling tiles in suspended grid systems without requiring additional support. The MagDuo is one component in ESP's wider range of fire detection devices and is typically specified alongside compatible detectors and call points on the same zone wiring.

    Specification
    Product Net Weight (KG) 0.25
    Product Gross Weight (KG) 0.3
    Outer Gross Weight (KG) 0.25
    Product Length (mm) 150
    Product Width (mm) 150
    Product Height (mm) 80
    Outer Length (mm) 150
    Outer Width (mm) 150
    Outer Height (mm) 80
    Downloads

    Product Specification Sheet

    Product Manual

    Frequently Asked

    What does 2-wire mean?

    The sounder connects to the fire alarm panel using just two cores of cable, carrying both power and the trigger signal on the same pair. This simplifies wiring compared to 4-wire devices that need separate power and signal pairs.

    What is the built-in end-of-line function?

    The sounder includes an internal resistor that allows the fire alarm panel to monitor the circuit and detect cable faults. Without this, you would need to fit a separate end-of-line resistor at the last device on the zone.

    Can the volume be adjusted after installation?

    Yes. A dial on the underside of the sounder adjusts the output between approximately 85dB and 102dB at 1 metre. This can be set during commissioning and re-adjusted later if needed.

    Is it suitable for outdoor use?

    No. The IP21C rating protects against solid objects larger than 12.5mm and vertical drips of water, but the MagDuo is intended for indoor use only. It is not rated for direct weather exposure or high-moisture environments like shower rooms.

    Shipping & Returns

    Free worldwide delivery

    Free worldwide delivery on all orders over £99. International orders for third-party brand products may be subject to an additional courier surcharge based on volumetric weight, particularly on larger lighting fixtures — if a surcharge applies, our team will email you with the amount before dispatch and you can proceed or cancel for a full refund. See full delivery terms.

    Returns

    30-day returns window from delivery. As all our products are electrical or lighting goods, returned items must be inspected and recertified by a qualified electrician before resale — the cost of this inspection (25–40% of the item value) is deducted from your refund. Customers pay return shipping. Made-to-order, special-order and clearance items cannot be returned. See full returns policy.