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1 Gang 5-400W Intelligent Dimmer Switch - White Round Edge

£1599
The RRP is the manufacturer's recommended retail price of the item.
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Description

The Knightsbridge 1 gang intelligent dimmer handles loads from 5-400W (5-150W LED) behind a white rounded-edge plate made from 7mm thermoset resin with anti-microbial properties. The dimmer switches between trailing-edge and leading-edge modes via a front-mounted control knob, allowing compatibility with different lamp technologies including dimmable LEDs, halogens and incandescent bulbs.

Designed for residential and commercial interiors where lighting needs may change over time, the front-accessible control knob allows installers or users to trim the minimum brightness, switch dimming modes and reset the dimmer without removing the faceplate or accessing the back box. The rotary push-on/push-off action dims by turning the knob and switches the circuit on or off by pressing it. The dimmer operates as a 2-way switch, allowing control from two locations when wired with a matching 2-way switch elsewhere in the circuit.

The 86mm square plate has a rounded-edge profile that sits slightly raised from the wall, providing a softer visual appearance than sharp-edged alternatives. The white finish pairs with most residential and office interiors, and the thermoset resin construction resists discolouration and impact better than standard plastic faceplates. The dimmer fits a standard 25mm minimum back box depth and carries an IP20 rating for dry indoor use. All lamps on the circuit must be dimmable, and mixing different lamp brands or wattages on the same dimmer is not supported.

Specification
Height 86mm
Width 86mm
Depth 43.5mm
Projection 25.5°
Recessed Depth 18.3mm
Min. Mounting Box Depth 25mm
Construction Thermoset resin
Finish White
IP Rating IP20
Primary Voltage 230V 50Hz
Downloads

Product Specification Sheet

Frequently Asked

What's the difference between trailing-edge and leading-edge modes?

Trailing-edge mode suits dimmable LEDs and low-voltage electronic transformers, while leading-edge mode suits older incandescent and halogen bulbs on resistive loads. The dimmer switches between modes using the front control knob, allowing it to adapt when bulb types change without rewiring.

Can this control lights from two locations?

Yes. The dimmer operates as a 2-way switch, so when paired with a standard 2-way switch at a second location, both switches can turn the circuit on or off. Only the dimmer location can adjust brightness.

What wattage LED bulbs does it support?

The dimmer handles 5-150W of dimmable LED load. In practice, this translates to approximately 10-15 dimmable LED bulbs at typical 8-12W each, depending on the exact bulb model and driver design. All bulbs on the circuit must be marked as dimmable.

Can I mix different bulb brands on the same dimmer?

No. Knightsbridge specifies that all lamps on the circuit must be the same brand and wattage to avoid flicker, inconsistent dimming or premature failure. Mixing lamp types overloads the dimmer's compatibility tuning.

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 1 gang intelligent dimmer handles loads from 5-400W (5-150W LED) behind a white rounded-edge plate made from 7mm thermoset resin with anti-microbial properties. The dimmer switches between trailing-edge and leading-edge modes via a front-mounted control knob, allowing compatibility with different lamp technologies including dimmable LEDs, halogens and incandescent bulbs.

    Designed for residential and commercial interiors where lighting needs may change over time, the front-accessible control knob allows installers or users to trim the minimum brightness, switch dimming modes and reset the dimmer without removing the faceplate or accessing the back box. The rotary push-on/push-off action dims by turning the knob and switches the circuit on or off by pressing it. The dimmer operates as a 2-way switch, allowing control from two locations when wired with a matching 2-way switch elsewhere in the circuit.

    The 86mm square plate has a rounded-edge profile that sits slightly raised from the wall, providing a softer visual appearance than sharp-edged alternatives. The white finish pairs with most residential and office interiors, and the thermoset resin construction resists discolouration and impact better than standard plastic faceplates. The dimmer fits a standard 25mm minimum back box depth and carries an IP20 rating for dry indoor use. All lamps on the circuit must be dimmable, and mixing different lamp brands or wattages on the same dimmer is not supported.

    Specification
    Height 86mm
    Width 86mm
    Depth 43.5mm
    Projection 25.5°
    Recessed Depth 18.3mm
    Min. Mounting Box Depth 25mm
    Construction Thermoset resin
    Finish White
    IP Rating IP20
    Primary Voltage 230V 50Hz
    Downloads

    Product Specification Sheet

    Frequently Asked

    What's the difference between trailing-edge and leading-edge modes?

    Trailing-edge mode suits dimmable LEDs and low-voltage electronic transformers, while leading-edge mode suits older incandescent and halogen bulbs on resistive loads. The dimmer switches between modes using the front control knob, allowing it to adapt when bulb types change without rewiring.

    Can this control lights from two locations?

    Yes. The dimmer operates as a 2-way switch, so when paired with a standard 2-way switch at a second location, both switches can turn the circuit on or off. Only the dimmer location can adjust brightness.

    What wattage LED bulbs does it support?

    The dimmer handles 5-150W of dimmable LED load. In practice, this translates to approximately 10-15 dimmable LED bulbs at typical 8-12W each, depending on the exact bulb model and driver design. All bulbs on the circuit must be marked as dimmable.

    Can I mix different bulb brands on the same dimmer?

    No. Knightsbridge specifies that all lamps on the circuit must be the same brand and wattage to avoid flicker, inconsistent dimming or premature failure. Mixing lamp types overloads the dimmer's compatibility tuning.

    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.