Free Delivery on all orders over £99*

IP65 Microwave Motion Sensor - White Polycarbonate 400W LED

£1699
The RRP is the manufacturer's recommended retail price of the item.
Limited Stock
We are an Independent UK Company
Price match. Found it cheaper? Contact us
Trade Discount Available
Description

The Knightsbridge OS021 is an IP65-rated microwave motion sensor built into a white polycarbonate housing with a pre-wired 0.5m cable for direct integration with LED battens and commercial lighting fixtures. The sensor detects movement using microwave frequency rather than passive infrared, giving it the ability to see through non-metallic materials and detect motion through lightweight panels, suspended ceilings and certain wall constructions.

Designed for commercial warehouse lighting, loading bays, covered outdoor walkways, and stairwells where automatic switching is needed, the sensor fits standard 20mm conduit entry points found on most commercial LED battens. The detection range extends 4-6m at a typical mounting height of 3m, with adjustable sensitivity allowing the installer to tune the sensor to ignore small movements (rodents, wind-blown debris) while still triggering on human presence. The adjustable lux setting prevents the sensor from activating during daylight hours, and the adjustable time delay controls how long the light stays on after the last detected movement.

The IP65 rating provides protection against dust ingress and low-pressure water jets, making the sensor suitable for both internal installation in dusty or damp environments and external installation under soffits, canopies or covered loading areas where direct rain exposure is avoided. The polycarbonate housing withstands typical industrial knocks and resists UV degradation. The sensor handles LED loads up to 400W on 230V mains and is Class II double-insulated, requiring no earth connection.

Specification
Diameter 60 mm
Length 134 mm
Projection 46 mm
Construction Polycarbonate
Finish White
Class II
IP Rating IP65
Primary Voltage 230V 50Hz
Cable Length 0.5 m
Warranty 3
Downloads

Product Specification Sheet

Product Manual

Frequently Asked

How does microwave sensing differ from PIR?

Microwave sensors emit a low-power radio frequency and detect changes in the reflected signal caused by movement. Unlike passive infrared (PIR) sensors, microwave sensors can see through lightweight non-metallic materials like suspended ceiling tiles, thin plasterboard and plastic panels. This makes them useful in installations where the sensor needs to be concealed or where detection through a barrier is required.

What are the adjustable settings?

The sensor has three adjustable controls: lux (light level threshold), time delay (how long the light stays on after the last movement), and sensitivity (detection range). These are adjusted via small dials or potentiometers on the sensor body. See the Product Manual in the Downloads tab for the adjustment ranges and recommended settings.

Can it be used outdoors?

Yes, but with limitations. The IP65 rating protects against dust and low-pressure water jets, making the sensor suitable for covered outdoor areas like soffits, canopies and loading bays. It should not be installed in positions exposed to direct rainfall, standing water or water spray from cleaning equipment.

Is it compatible with dimmers?

No. The sensor is non-dimmable and switches the load on/off only. It is not compatible with dimming systems or phase-control dimmers.

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.

You Might Also Like

Recommended For You

    Our Reviews

    From first click to final installation, our customers share how Niori lights up their spaces. Read their words and envision what’s possible for yours.

    Featured Projects

    Step into our portfolio and see how we transform homes, restaurants, and commercial spaces and more, worldwide. Click here for a closer look at our latest projects.

    Description

    The Knightsbridge OS021 is an IP65-rated microwave motion sensor built into a white polycarbonate housing with a pre-wired 0.5m cable for direct integration with LED battens and commercial lighting fixtures. The sensor detects movement using microwave frequency rather than passive infrared, giving it the ability to see through non-metallic materials and detect motion through lightweight panels, suspended ceilings and certain wall constructions.

    Designed for commercial warehouse lighting, loading bays, covered outdoor walkways, and stairwells where automatic switching is needed, the sensor fits standard 20mm conduit entry points found on most commercial LED battens. The detection range extends 4-6m at a typical mounting height of 3m, with adjustable sensitivity allowing the installer to tune the sensor to ignore small movements (rodents, wind-blown debris) while still triggering on human presence. The adjustable lux setting prevents the sensor from activating during daylight hours, and the adjustable time delay controls how long the light stays on after the last detected movement.

    The IP65 rating provides protection against dust ingress and low-pressure water jets, making the sensor suitable for both internal installation in dusty or damp environments and external installation under soffits, canopies or covered loading areas where direct rain exposure is avoided. The polycarbonate housing withstands typical industrial knocks and resists UV degradation. The sensor handles LED loads up to 400W on 230V mains and is Class II double-insulated, requiring no earth connection.

    Specification
    Diameter 60 mm
    Length 134 mm
    Projection 46 mm
    Construction Polycarbonate
    Finish White
    Class II
    IP Rating IP65
    Primary Voltage 230V 50Hz
    Cable Length 0.5 m
    Warranty 3
    Downloads

    Product Specification Sheet

    Product Manual

    Frequently Asked

    How does microwave sensing differ from PIR?

    Microwave sensors emit a low-power radio frequency and detect changes in the reflected signal caused by movement. Unlike passive infrared (PIR) sensors, microwave sensors can see through lightweight non-metallic materials like suspended ceiling tiles, thin plasterboard and plastic panels. This makes them useful in installations where the sensor needs to be concealed or where detection through a barrier is required.

    What are the adjustable settings?

    The sensor has three adjustable controls: lux (light level threshold), time delay (how long the light stays on after the last movement), and sensitivity (detection range). These are adjusted via small dials or potentiometers on the sensor body. See the Product Manual in the Downloads tab for the adjustment ranges and recommended settings.

    Can it be used outdoors?

    Yes, but with limitations. The IP65 rating protects against dust and low-pressure water jets, making the sensor suitable for covered outdoor areas like soffits, canopies and loading bays. It should not be installed in positions exposed to direct rainfall, standing water or water spray from cleaning equipment.

    Is it compatible with dimmers?

    No. The sensor is non-dimmable and switches the load on/off only. It is not compatible with dimming systems or phase-control dimmers.

    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.