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2-Way 10-150W Intelligent Dimmer Module - Smoked Bronze

£1899
The RRP is the manufacturer's recommended retail price of the item.
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Description

The Knightsbridge GDM150ISB is a 2-way intelligent dimmer module designed for the Knightsbridge grid wiring system, compatible with Screwless, Flat Plate, Raised Edge and Metal Clad grid configurations. The module switches between leading edge and trailing edge modes using a recessed toggle, allowing it to dim incandescent, mains halogen, low-voltage halogen with electronic transformers, and dimmable LED lamps. The dimmer handles 10-150W for incandescent and halogen loads, and 5-150W for dimmable LEDs.

The module uses push on/off control combined with rotary dimming, mounted on a compact 25mm-wide grid plate that fits a standard 35mm minimum back box depth. The smoked bronze finish on the rotary knob and faceplate provides a darker metallic tone that pairs with contemporary, industrial and warm-toned interiors. The 2-way switching capability allows the dimmer to be controlled from two separate switch positions, suited to rooms with multiple entry points such as hallways, staircases and living rooms with two doorways.

The module includes overload protection, over-temperature protection and an inrush current limiter to manage the initial power draw when switching multiple lamps on simultaneously. Knightsbridge recommends limiting the dimmer to a maximum of 10-12 lamps per circuit to prevent inrush current issues that can trip protection or shorten the dimmer's operational life. The steel and ABS construction gives the module physical durability during installation and use, with the IP20 rating indicating suitability for dry indoor environments only.

Specification
Height 56.3 mm
Width 25 mm
Projection 23 mm
Recessed Depth 22 mm
Min. Mounting Box Depth 35mm
Construction Premium grade steel
Construction 2 & ABS
Finish Smoked Bronze
IP Rating IP20
Primary Voltage 230V 50Hz
Warranty 2
Downloads

Product Specification Sheet

Product Manual

Frequently Asked

What is the difference between leading edge and trailing edge dimming?

Leading edge dimming cuts power at the start of each AC cycle and works best with incandescent and mains-voltage halogen lamps. Trailing edge dimming cuts power at the end of each AC cycle and is typically smoother for dimmable LEDs and electronic transformers. This dimmer switches between both modes using a recessed toggle, allowing it to handle both lamp types on the same circuit.

Can this dimmer be used in a 2-way switching setup?

Yes. The module is designed for 2-way switching, meaning it can be controlled from two separate switch positions. This suits hallways, staircases and rooms with multiple entry points where switching from either end is needed.

What back box depth is required?

A minimum 35mm back box depth is needed for safe installation. The module itself has a recessed depth of 22mm and a projection of 23mm from the wall once the grid plate is fitted.

How many LED bulbs can this dimmer control?

Knightsbridge recommends limiting the dimmer to a maximum of 10-12 lamps per circuit to prevent inrush current issues when switching on. The total load must not exceed 150W for incandescent/halogen or 150W for dimmable LEDs.

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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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 GDM150ISB is a 2-way intelligent dimmer module designed for the Knightsbridge grid wiring system, compatible with Screwless, Flat Plate, Raised Edge and Metal Clad grid configurations. The module switches between leading edge and trailing edge modes using a recessed toggle, allowing it to dim incandescent, mains halogen, low-voltage halogen with electronic transformers, and dimmable LED lamps. The dimmer handles 10-150W for incandescent and halogen loads, and 5-150W for dimmable LEDs.

    The module uses push on/off control combined with rotary dimming, mounted on a compact 25mm-wide grid plate that fits a standard 35mm minimum back box depth. The smoked bronze finish on the rotary knob and faceplate provides a darker metallic tone that pairs with contemporary, industrial and warm-toned interiors. The 2-way switching capability allows the dimmer to be controlled from two separate switch positions, suited to rooms with multiple entry points such as hallways, staircases and living rooms with two doorways.

    The module includes overload protection, over-temperature protection and an inrush current limiter to manage the initial power draw when switching multiple lamps on simultaneously. Knightsbridge recommends limiting the dimmer to a maximum of 10-12 lamps per circuit to prevent inrush current issues that can trip protection or shorten the dimmer's operational life. The steel and ABS construction gives the module physical durability during installation and use, with the IP20 rating indicating suitability for dry indoor environments only.

    Specification
    Height 56.3 mm
    Width 25 mm
    Projection 23 mm
    Recessed Depth 22 mm
    Min. Mounting Box Depth 35mm
    Construction Premium grade steel
    Construction 2 & ABS
    Finish Smoked Bronze
    IP Rating IP20
    Primary Voltage 230V 50Hz
    Warranty 2
    Downloads

    Product Specification Sheet

    Product Manual

    Frequently Asked

    What is the difference between leading edge and trailing edge dimming?

    Leading edge dimming cuts power at the start of each AC cycle and works best with incandescent and mains-voltage halogen lamps. Trailing edge dimming cuts power at the end of each AC cycle and is typically smoother for dimmable LEDs and electronic transformers. This dimmer switches between both modes using a recessed toggle, allowing it to handle both lamp types on the same circuit.

    Can this dimmer be used in a 2-way switching setup?

    Yes. The module is designed for 2-way switching, meaning it can be controlled from two separate switch positions. This suits hallways, staircases and rooms with multiple entry points where switching from either end is needed.

    What back box depth is required?

    A minimum 35mm back box depth is needed for safe installation. The module itself has a recessed depth of 22mm and a projection of 23mm from the wall once the grid plate is fitted.

    How many LED bulbs can this dimmer control?

    Knightsbridge recommends limiting the dimmer to a maximum of 10-12 lamps per circuit to prevent inrush current issues when switching on. The total load must not exceed 150W for incandescent/halogen or 150W for dimmable LEDs.

    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.