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BT Evo 18W IK10 LED Bulkhead With Photocell Sensor - White

£2399
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Description

The Knightsbridge BT Evo is a 300mm polycarbonate LED bulkhead with an integrated photocell sensor that automatically switches the fitting on at dusk and off at dawn. The bulkhead offers selectable wattage output at 9W, 14W or 18W and three colour temperatures — 3000K, 4000K or 5700K — adjustable via DIP switches inside the fitting before installation. At 18W on 4000K the bulkhead outputs 1750 lumens through an opal diffuser with a 120-degree beam angle.

Designed for external perimeter lighting, access paths, carparks, building entrances and under-canopy areas where vandal resistance and automated control are needed, the bulkhead carries IP65 weatherproofing and IK10 impact resistance. The photocell sensor is factory-set for exterior use only and includes a slave live terminal that allows the bulkhead to control adjacent non-sensor luminaires, enabling multiple fittings to switch together without duplicating photocells across the installation.

The 300mm diameter polycarbonate base is UV-stabilised to resist yellowing in sunlight, finished in white, and fitted with a clip-on bezel that can be swapped for alternative finishes from Knightsbridge's BT Evo range to match existing schemes. The 65mm projection from the wall or ceiling allows rear BESA mounting or surface fixing via four fixing points on the base. The integrated SMD LED module is rated to 50,000 hours at L70B50 and carries a 5-year guarantee including the driver.

At 9W the bulkhead outputs 930 lumens at 4000K, at 14W it outputs 1400 lumens, and at 18W it outputs 1750 lumens. The efficacy at the light source ranges from 134-136 lumens per watt depending on selected wattage. The non-dimmable constant current driver operates on 230V 50Hz mains and the fitting is Class II double-insulated, requiring no earth connection.

Specification
Diameter 300mm
Projection 65mm
Construction Polycarbonate
Finish White
Bezel Included Yes
Interchangeable Bezel Clip On
IP Rating IP65
Class II
Primary Voltage 230V 50Hz
Diffuser Opal
Lamp Technology SMD LED
Dimmable No
L70B50 50000
Energy Rating (Class) post 2021 SLR D
Beam Angle 120
CCT 3000/4000/5700K
Light Colour CCT
Lumens 890/930/915,1295/1400/1330,1520/1750/1585lm
Lumens (Light source only) 1215/1900/2300lm
Wattage 9/14/18W
Efficacy (Light source) 136/136/134lm/W
CRI >85
Driver Type Constant Current
Warranty 5 Year Guarantee
Warranty Information including battery
Downloads

Product Specification Sheet

Frequently Asked

How is the wattage and colour temperature adjusted?

Both settings are controlled by DIP switches accessible inside the fitting. The wattage can be set to 9W, 14W or 18W, and the colour temperature to 3000K (warm white), 4000K (neutral white) or 5700K (cool white). These settings must be configured before installation and cannot be changed once the fitting is sealed and mounted.

Can the photocell be disabled for indoor use?

No. The photocell is factory-set and designed specifically for exterior use where automated dusk-to-dawn control is needed. If you need a bulkhead for indoor use without a photocell, Knightsbridge offers non-sensor versions in the BT Evo range.

What is the slave live terminal used for?

The slave live terminal allows this bulkhead to control adjacent non-sensor luminaires. When the photocell activates this fitting at dusk, it sends a switched live signal to any connected fittings, allowing them to switch on and off in sync without needing their own photocells.

What does IK10 impact resistance mean?

IK10 is the highest rating on the International Electrotechnical Commission's impact scale. The fitting can withstand a 5kg mass dropped from 40cm, which equates to 20 joules of impact energy. This makes it suitable for high-traffic areas, vandal-prone locations and installations subject to accidental knocks.

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 Knightsbridge BT Evo is a 300mm polycarbonate LED bulkhead with an integrated photocell sensor that automatically switches the fitting on at dusk and off at dawn. The bulkhead offers selectable wattage output at 9W, 14W or 18W and three colour temperatures — 3000K, 4000K or 5700K — adjustable via DIP switches inside the fitting before installation. At 18W on 4000K the bulkhead outputs 1750 lumens through an opal diffuser with a 120-degree beam angle.

    Designed for external perimeter lighting, access paths, carparks, building entrances and under-canopy areas where vandal resistance and automated control are needed, the bulkhead carries IP65 weatherproofing and IK10 impact resistance. The photocell sensor is factory-set for exterior use only and includes a slave live terminal that allows the bulkhead to control adjacent non-sensor luminaires, enabling multiple fittings to switch together without duplicating photocells across the installation.

    The 300mm diameter polycarbonate base is UV-stabilised to resist yellowing in sunlight, finished in white, and fitted with a clip-on bezel that can be swapped for alternative finishes from Knightsbridge's BT Evo range to match existing schemes. The 65mm projection from the wall or ceiling allows rear BESA mounting or surface fixing via four fixing points on the base. The integrated SMD LED module is rated to 50,000 hours at L70B50 and carries a 5-year guarantee including the driver.

    At 9W the bulkhead outputs 930 lumens at 4000K, at 14W it outputs 1400 lumens, and at 18W it outputs 1750 lumens. The efficacy at the light source ranges from 134-136 lumens per watt depending on selected wattage. The non-dimmable constant current driver operates on 230V 50Hz mains and the fitting is Class II double-insulated, requiring no earth connection.

    Specification
    Diameter 300mm
    Projection 65mm
    Construction Polycarbonate
    Finish White
    Bezel Included Yes
    Interchangeable Bezel Clip On
    IP Rating IP65
    Class II
    Primary Voltage 230V 50Hz
    Diffuser Opal
    Lamp Technology SMD LED
    Dimmable No
    L70B50 50000
    Energy Rating (Class) post 2021 SLR D
    Beam Angle 120
    CCT 3000/4000/5700K
    Light Colour CCT
    Lumens 890/930/915,1295/1400/1330,1520/1750/1585lm
    Lumens (Light source only) 1215/1900/2300lm
    Wattage 9/14/18W
    Efficacy (Light source) 136/136/134lm/W
    CRI >85
    Driver Type Constant Current
    Warranty 5 Year Guarantee
    Warranty Information including battery
    Downloads

    Product Specification Sheet

    Frequently Asked

    How is the wattage and colour temperature adjusted?

    Both settings are controlled by DIP switches accessible inside the fitting. The wattage can be set to 9W, 14W or 18W, and the colour temperature to 3000K (warm white), 4000K (neutral white) or 5700K (cool white). These settings must be configured before installation and cannot be changed once the fitting is sealed and mounted.

    Can the photocell be disabled for indoor use?

    No. The photocell is factory-set and designed specifically for exterior use where automated dusk-to-dawn control is needed. If you need a bulkhead for indoor use without a photocell, Knightsbridge offers non-sensor versions in the BT Evo range.

    What is the slave live terminal used for?

    The slave live terminal allows this bulkhead to control adjacent non-sensor luminaires. When the photocell activates this fitting at dusk, it sends a switched live signal to any connected fittings, allowing them to switch on and off in sync without needing their own photocells.

    What does IK10 impact resistance mean?

    IK10 is the highest rating on the International Electrotechnical Commission's impact scale. The fitting can withstand a 5kg mass dropped from 40cm, which equates to 20 joules of impact energy. This makes it suitable for high-traffic areas, vandal-prone locations and installations subject to accidental knocks.

    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.