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4 Gang 2-Way 10-200W Intelligent Dimmer - Matt Black Screwless

£6199
The RRP is the manufacturer's recommended retail price of the item.
60 In Stock - Ready to Ship
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Description

The Knightsbridge 4-gang intelligent dimmer provides independent rotary dimming control across four lighting circuits from a single matt black screwless faceplate. Each gang handles 10-200W incandescent or halogen loads, or 5-150W dimmable LED loads, with switchable trailing-edge and leading-edge modes selectable per gang to match different lamp technologies.

Designed for residential living rooms, dining rooms and bedrooms where multiple lighting circuits need individual dimming control, the unit allows each circuit to be adjusted independently via push-on/off and rotary dimming knobs. The mode switching (trailing vs leading-edge) is controlled from the front of the plate via a trim knob on each gang, meaning the dimmer can be reconfigured for different lamp types without removing the faceplate or accessing the back box. This makes it straightforward to adapt the dimmer if bulbs are changed from halogen to LED, or if different LED drivers require a different edge mode.

The matt black finish is a low-sheen powder coat over premium-grade steel, giving a contemporary architectural appearance that pairs with black ironmongery, dark timber joinery and monochrome interiors. The screwless cover plate clips onto a separate metal sub-frame, hiding all fixings once installed. Each gang includes overload and overheat protection, plus an inrush current limiter to handle the switching surge that occurs when certain dimmable LEDs are first powered. The dimmer requires a 25mm minimum back box depth and connects via screw terminals with an earth connection required.

Note: All lamps controlled by a single gang must be the same brand, type and wattage. Mixing different lamp brands or wattages on one circuit will cause flicker, hum or inconsistent dimming performance.

Specification
Height 87.5 mm
Width 147.5 mm
Projection 4.3 mm
Recessed Depth 21.3 mm
Min. Mounting Box Depth 25mm
Construction Premium grade steel
Finish Matt Black
Class I
IP Rating IP20
Primary Voltage 230V 50Hz
Earth Terminal Yes
Terminal Screw
Warranty 2
Downloads

Product Specification Sheet

Frequently Asked

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

Trailing-edge mode suits most dimmable LEDs and low-voltage lighting with electronic transformers. Leading-edge mode suits older incandescent, halogen and magnetic-transformer low-voltage lighting. The dimmer ships preset to trailing-edge, but each gang can be switched to leading-edge via the front control knob if needed for compatibility with specific lamps or drivers.

Can I mix different bulb types across the four gangs?

Yes, each gang can control a different lamp type (one gang on LEDs, another on halogen, for example) because each gang has independent mode switching. However, all lamps controlled by a single gang must be identical — same brand, type and wattage. Mixing different lamps on one circuit causes flicker and unreliable dimming.

What back box depth is required?

A 25mm minimum back box depth is needed. The screwless cover plate adds 4.3mm projection from the wall surface once fitted, with 21.3mm recessed into the back box.

How is the dimmer reset if it stops working?

Each gang has a reset function accessible via the front control knob, eliminating the need to remove the faceplate or access the back box. Consult the product specification sheet (Downloads tab) for the exact reset procedure.

Shipping & Returns

Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

To arrange a return, call us on 020 8149 5199 or use our contact page.

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Every product arrives brand new with the full manufacturer warranty. Found it cheaper elsewhere? Ask us about a price match.

Installation

Fits standard UK back boxes

Designed to fit standard UK back boxes for a straightforward swap of your existing fittings.

Ordering with us

Free delivery over £99

Free delivery on orders over £99, in the UK and worldwide. Easy returns within 14 days, subject to our returns policy. Full manufacturer warranty included.

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    Description

    The Knightsbridge 4-gang intelligent dimmer provides independent rotary dimming control across four lighting circuits from a single matt black screwless faceplate. Each gang handles 10-200W incandescent or halogen loads, or 5-150W dimmable LED loads, with switchable trailing-edge and leading-edge modes selectable per gang to match different lamp technologies.

    Designed for residential living rooms, dining rooms and bedrooms where multiple lighting circuits need individual dimming control, the unit allows each circuit to be adjusted independently via push-on/off and rotary dimming knobs. The mode switching (trailing vs leading-edge) is controlled from the front of the plate via a trim knob on each gang, meaning the dimmer can be reconfigured for different lamp types without removing the faceplate or accessing the back box. This makes it straightforward to adapt the dimmer if bulbs are changed from halogen to LED, or if different LED drivers require a different edge mode.

    The matt black finish is a low-sheen powder coat over premium-grade steel, giving a contemporary architectural appearance that pairs with black ironmongery, dark timber joinery and monochrome interiors. The screwless cover plate clips onto a separate metal sub-frame, hiding all fixings once installed. Each gang includes overload and overheat protection, plus an inrush current limiter to handle the switching surge that occurs when certain dimmable LEDs are first powered. The dimmer requires a 25mm minimum back box depth and connects via screw terminals with an earth connection required.

    Note: All lamps controlled by a single gang must be the same brand, type and wattage. Mixing different lamp brands or wattages on one circuit will cause flicker, hum or inconsistent dimming performance.

    Specification
    Height 87.5 mm
    Width 147.5 mm
    Projection 4.3 mm
    Recessed Depth 21.3 mm
    Min. Mounting Box Depth 25mm
    Construction Premium grade steel
    Finish Matt Black
    Class I
    IP Rating IP20
    Primary Voltage 230V 50Hz
    Earth Terminal Yes
    Terminal Screw
    Warranty 2
    Downloads

    Product Specification Sheet

    Frequently Asked

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

    Trailing-edge mode suits most dimmable LEDs and low-voltage lighting with electronic transformers. Leading-edge mode suits older incandescent, halogen and magnetic-transformer low-voltage lighting. The dimmer ships preset to trailing-edge, but each gang can be switched to leading-edge via the front control knob if needed for compatibility with specific lamps or drivers.

    Can I mix different bulb types across the four gangs?

    Yes, each gang can control a different lamp type (one gang on LEDs, another on halogen, for example) because each gang has independent mode switching. However, all lamps controlled by a single gang must be identical — same brand, type and wattage. Mixing different lamps on one circuit causes flicker and unreliable dimming.

    What back box depth is required?

    A 25mm minimum back box depth is needed. The screwless cover plate adds 4.3mm projection from the wall surface once fitted, with 21.3mm recessed into the back box.

    How is the dimmer reset if it stops working?

    Each gang has a reset function accessible via the front control knob, eliminating the need to remove the faceplate or access the back box. Consult the product specification sheet (Downloads tab) for the exact reset procedure.

    Shipping & Returns

    Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

    Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

    To arrange a return, call us on 020 8149 5199 or use our contact page.