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MagDuo 2-Wire Ceiling Mount Sounder - White

£2699
The RRP is the manufacturer's recommended retail price of the item.
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Description

The MagDuo is a ceiling-mount alarm sounder in white ABS housing, designed for 2-wire fire and intruder alarm systems. The sounder connects via a two-wire loop carrying both power and trigger signal, simplifying installation compared to conventional 4-wire devices. Volume is adjustable across multiple levels via internal DIP switches, allowing the output to be calibrated to room size and ambient noise.

Installed on ceilings in commercial premises, care homes, schools and industrial units, the MagDuo suits environments where wall-mount sirens are impractical or where ceiling placement provides better audibility across open-plan spaces. The built-in End of Line (EOL) function allows the control panel to monitor circuit integrity and detect tampering or disconnection. The device ships with a separate wiring base that fixes to a standard electrical back box, with the sounder body twisting onto the base after wiring is complete.

The 150mm diameter white housing carries an IP21C ingress protection rating, protecting against solid objects larger than 12.5mm and vertically-falling water droplets. The ABS construction withstands impact and UV exposure without discolouration in typical indoor settings. At 250g net weight, the sounder mounts securely to plasterboard ceilings using the supplied wiring base and does not require additional bracing in most installations.

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 is a 2-wire sounder and how does it differ from a 4-wire device?

A 2-wire sounder receives both power and trigger signal over the same two-wire loop, whereas a 4-wire device uses separate pairs for power and triggering. The 2-wire configuration simplifies wiring and reduces cable costs in large installations, but requires a compatible control panel that supports 2-wire devices.

How is the volume adjusted?

Volume is adjusted via internal DIP switches accessible by removing the sounder body from the wiring base. Multiple volume levels are available, allowing the output to be matched to room size and background noise. Exact dB levels and adjustment steps are detailed in the product manual.

What does the built-in End of Line (EOL) function do?

The EOL function allows the alarm control panel to continuously monitor the circuit for faults, disconnections or tampering. If the sounder is removed or the wiring is cut, the panel detects the change in circuit resistance and triggers a tamper alert.

Can it be installed outdoors?

The IP21C rating protects against vertically-falling water droplets and solid objects larger than 12.5mm, which is sufficient for dry indoor environments but not for outdoor exposure to rain, wind-driven moisture or temperature extremes. For outdoor use, specify an IP65 or IP66-rated external sounder.

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 MagDuo is a ceiling-mount alarm sounder in white ABS housing, designed for 2-wire fire and intruder alarm systems. The sounder connects via a two-wire loop carrying both power and trigger signal, simplifying installation compared to conventional 4-wire devices. Volume is adjustable across multiple levels via internal DIP switches, allowing the output to be calibrated to room size and ambient noise.

    Installed on ceilings in commercial premises, care homes, schools and industrial units, the MagDuo suits environments where wall-mount sirens are impractical or where ceiling placement provides better audibility across open-plan spaces. The built-in End of Line (EOL) function allows the control panel to monitor circuit integrity and detect tampering or disconnection. The device ships with a separate wiring base that fixes to a standard electrical back box, with the sounder body twisting onto the base after wiring is complete.

    The 150mm diameter white housing carries an IP21C ingress protection rating, protecting against solid objects larger than 12.5mm and vertically-falling water droplets. The ABS construction withstands impact and UV exposure without discolouration in typical indoor settings. At 250g net weight, the sounder mounts securely to plasterboard ceilings using the supplied wiring base and does not require additional bracing in most installations.

    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 is a 2-wire sounder and how does it differ from a 4-wire device?

    A 2-wire sounder receives both power and trigger signal over the same two-wire loop, whereas a 4-wire device uses separate pairs for power and triggering. The 2-wire configuration simplifies wiring and reduces cable costs in large installations, but requires a compatible control panel that supports 2-wire devices.

    How is the volume adjusted?

    Volume is adjusted via internal DIP switches accessible by removing the sounder body from the wiring base. Multiple volume levels are available, allowing the output to be matched to room size and background noise. Exact dB levels and adjustment steps are detailed in the product manual.

    What does the built-in End of Line (EOL) function do?

    The EOL function allows the alarm control panel to continuously monitor the circuit for faults, disconnections or tampering. If the sounder is removed or the wiring is cut, the panel detects the change in circuit resistance and triggers a tamper alert.

    Can it be installed outdoors?

    The IP21C rating protects against vertically-falling water droplets and solid objects larger than 12.5mm, which is sufficient for dry indoor environments but not for outdoor exposure to rain, wind-driven moisture or temperature extremes. For outdoor use, specify an IP65 or IP66-rated external sounder.

    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.