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4 Gang 2-Way Intelligent Dimmer 5-400W (5-150W LED) - White Round Edge

£6299
The RRP is the manufacturer's recommended retail price of the item.
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Description

The Knightsbridge 4-gang 2-way intelligent dimmer handles four separate lighting circuits from a single 146mm white round-edge faceplate, supporting 5-400W incandescent or 5-150W dimmable LED loads per gang. Each rotary knob provides push-on/push-off switching and continuous dimming control, with front-accessible trim adjustment and mode switching between trailing-edge and leading-edge operation to suit different lamp technologies.

Designed for residential and commercial installations where multiple lighting circuits need individual dimming control from a single wall position, the dimmer suits living rooms with separate ceiling, wall and table lamp circuits, kitchens with distinct task and ambient lighting zones, or hotel rooms with independently controlled bedside, ceiling and bathroom lighting. The 2-way capability allows the same circuits to be dimmed from a second location, paired with a compatible 2-way switch or dimmer.

The white thermoset resin faceplate carries an anti-microbial finish and a 7mm rounded edge profile that sits closer to the wall than traditional square-edge plates. The four rotary controls are recessed into the plate, with each knob labelled by circuit position. Trim adjustments on each gang allow the minimum brightness level to be set during installation, compensating for different lamp types and preventing flicker at low dim levels. The dimmer requires a 25mm minimum back box depth and fits standard UK double-gang mounting centres.

All four circuits must use dimmable lamps only. Mixing different lamp brands, wattages or technologies on the same circuit can cause flickering, buzzing or premature lamp failure. For stable performance, use matched lamps of the same make, model and wattage on each gang.

Specification
Height 86mm
Width 146mm
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 LED and CFL lamps, reducing electrical noise and flicker. Leading-edge mode suits traditional incandescent and halogen lamps. The dimmer switches between modes via front controls, allowing compatibility with different lamp technologies on each gang.

Can I use different lamp types on the four gangs?

Yes, each gang can be set to a different mode to suit the lamp type connected to that circuit. However, all lamps on the same gang (same circuit) must be identical in brand, model and wattage to avoid flickering and buzzing.

What does the trim adjustment do?

The trim control on each gang sets the minimum brightness level when the dimmer is at its lowest position. This prevents flicker at low dim levels and accommodates different lamp technologies that have varying minimum dim thresholds.

Is this compatible with non-dimmable LED bulbs?

No. Only dimmable LED, dimmable CFL, incandescent or halogen lamps should be used. Non-dimmable lamps will flicker, buzz or fail when connected to a dimmer circuit.

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 4-gang 2-way intelligent dimmer handles four separate lighting circuits from a single 146mm white round-edge faceplate, supporting 5-400W incandescent or 5-150W dimmable LED loads per gang. Each rotary knob provides push-on/push-off switching and continuous dimming control, with front-accessible trim adjustment and mode switching between trailing-edge and leading-edge operation to suit different lamp technologies.

    Designed for residential and commercial installations where multiple lighting circuits need individual dimming control from a single wall position, the dimmer suits living rooms with separate ceiling, wall and table lamp circuits, kitchens with distinct task and ambient lighting zones, or hotel rooms with independently controlled bedside, ceiling and bathroom lighting. The 2-way capability allows the same circuits to be dimmed from a second location, paired with a compatible 2-way switch or dimmer.

    The white thermoset resin faceplate carries an anti-microbial finish and a 7mm rounded edge profile that sits closer to the wall than traditional square-edge plates. The four rotary controls are recessed into the plate, with each knob labelled by circuit position. Trim adjustments on each gang allow the minimum brightness level to be set during installation, compensating for different lamp types and preventing flicker at low dim levels. The dimmer requires a 25mm minimum back box depth and fits standard UK double-gang mounting centres.

    All four circuits must use dimmable lamps only. Mixing different lamp brands, wattages or technologies on the same circuit can cause flickering, buzzing or premature lamp failure. For stable performance, use matched lamps of the same make, model and wattage on each gang.

    Specification
    Height 86mm
    Width 146mm
    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 LED and CFL lamps, reducing electrical noise and flicker. Leading-edge mode suits traditional incandescent and halogen lamps. The dimmer switches between modes via front controls, allowing compatibility with different lamp technologies on each gang.

    Can I use different lamp types on the four gangs?

    Yes, each gang can be set to a different mode to suit the lamp type connected to that circuit. However, all lamps on the same gang (same circuit) must be identical in brand, model and wattage to avoid flickering and buzzing.

    What does the trim adjustment do?

    The trim control on each gang sets the minimum brightness level when the dimmer is at its lowest position. This prevents flicker at low dim levels and accommodates different lamp technologies that have varying minimum dim thresholds.

    Is this compatible with non-dimmable LED bulbs?

    No. Only dimmable LED, dimmable CFL, incandescent or halogen lamps should be used. Non-dimmable lamps will flicker, buzz or fail when connected to a dimmer circuit.

    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.