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Duceri 3W LED Maintained Emergency Exit Box Self-Test Surface Mount Right Legend - White

£3799
The RRP is the manufacturer's recommended retail price of the item.
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Description

The Duceri D520RWH is a surface-mount emergency exit box with a 3W LED lamp, integrated self-test function and lithium battery backup providing maintained or non-maintained operation. The white polycarbonate housing measures 402mm x 204mm x 71mm and carries a right-arrow running man legend on a green backlit panel, conforming to BS EN 60598-2-22 and BS 5266 emergency lighting standards.

Designed for commercial, hospitality and public building installation, the Duceri mounts directly onto walls or ceilings above final exit routes, fire exit doors and escape corridors where directional guidance is required. The self-test function automatically checks the battery charge level and LED operation at regular intervals, logging fault data to simplify maintenance inspections and reduce manual testing requirements. The maintained mode keeps the LED illuminated during normal mains operation, switching to battery power during a mains failure.

The lithium battery chemistry provides a longer service life and more stable charge retention compared to nickel-cadmium alternatives, typically requiring replacement every 4-5 years rather than 3 years. The IP20 rating makes the fitting suitable for indoor use in dry locations. The white finish integrates cleanly with suspended ceilings, painted plasterboard and commercial corridor interiors without drawing excessive attention during normal operation.

Specification
Product Net Weight (KG) 1.2
Product Gross Weight (KG) 1.438
Outer Gross Weight (KG) 8.63
Product Length (mm) 402
Product Width (mm) 204
Product Height (mm) 71
Outer Length (mm) 420
Outer Width (mm) 425
Outer Height (mm) 260
Downloads

Product Specification Sheet

Product Manual

Frequently Asked

What is the difference between maintained and non-maintained operation?

Maintained mode keeps the LED illuminated continuously during normal mains operation and switches to battery power during a mains failure. Non-maintained mode only illuminates the LED when the mains supply fails. The Duceri D520RWH can be configured for either mode during installation.

How does the self-test function work?

The self-test function automatically checks the battery charge level and LED operation at programmed intervals, typically monthly for a short functional test and annually for a full-duration discharge test. Fault data is logged internally and indicated by status LEDs on the fitting, reducing the need for manual testing and simplifying compliance inspections.

How long does the lithium battery last?

Lithium batteries in emergency lighting typically provide 4-5 years of service life before requiring replacement, compared to 3 years for nickel-cadmium alternatives. The self-test function monitors battery condition and will indicate when replacement is needed.

What emergency duration does it provide?

The battery backup provides 3 hours of emergency illumination during a mains failure, meeting the standard requirement for most UK commercial and public buildings under BS 5266. See the specification sheet in the Downloads tab for exact battery capacity and duration ratings.

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 Duceri D520RWH is a surface-mount emergency exit box with a 3W LED lamp, integrated self-test function and lithium battery backup providing maintained or non-maintained operation. The white polycarbonate housing measures 402mm x 204mm x 71mm and carries a right-arrow running man legend on a green backlit panel, conforming to BS EN 60598-2-22 and BS 5266 emergency lighting standards.

    Designed for commercial, hospitality and public building installation, the Duceri mounts directly onto walls or ceilings above final exit routes, fire exit doors and escape corridors where directional guidance is required. The self-test function automatically checks the battery charge level and LED operation at regular intervals, logging fault data to simplify maintenance inspections and reduce manual testing requirements. The maintained mode keeps the LED illuminated during normal mains operation, switching to battery power during a mains failure.

    The lithium battery chemistry provides a longer service life and more stable charge retention compared to nickel-cadmium alternatives, typically requiring replacement every 4-5 years rather than 3 years. The IP20 rating makes the fitting suitable for indoor use in dry locations. The white finish integrates cleanly with suspended ceilings, painted plasterboard and commercial corridor interiors without drawing excessive attention during normal operation.

    Specification
    Product Net Weight (KG) 1.2
    Product Gross Weight (KG) 1.438
    Outer Gross Weight (KG) 8.63
    Product Length (mm) 402
    Product Width (mm) 204
    Product Height (mm) 71
    Outer Length (mm) 420
    Outer Width (mm) 425
    Outer Height (mm) 260
    Downloads

    Product Specification Sheet

    Product Manual

    Frequently Asked

    What is the difference between maintained and non-maintained operation?

    Maintained mode keeps the LED illuminated continuously during normal mains operation and switches to battery power during a mains failure. Non-maintained mode only illuminates the LED when the mains supply fails. The Duceri D520RWH can be configured for either mode during installation.

    How does the self-test function work?

    The self-test function automatically checks the battery charge level and LED operation at programmed intervals, typically monthly for a short functional test and annually for a full-duration discharge test. Fault data is logged internally and indicated by status LEDs on the fitting, reducing the need for manual testing and simplifying compliance inspections.

    How long does the lithium battery last?

    Lithium batteries in emergency lighting typically provide 4-5 years of service life before requiring replacement, compared to 3 years for nickel-cadmium alternatives. The self-test function monitors battery condition and will indicate when replacement is needed.

    What emergency duration does it provide?

    The battery backup provides 3 hours of emergency illumination during a mains failure, meeting the standard requirement for most UK commercial and public buildings under BS 5266. See the specification sheet in the Downloads tab for exact battery capacity and duration ratings.

    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.