Free UK Delivery On Orders Over £120*
Secure Ordering
Up To 5 Year Warranty
5* Service & Support

MR11 LED Dimmable
GU4 Base

£8.25 exc. VAT
Free UK delivery on orders over £120
3 year warranty


  • Ideal replacement for your existing halogen lamps up to 40W
  • 3W Dimmable LED
  • 12V, GU4 base
  • Aluminium chassis
  • Using only the best Cree XB-D LEDs
  • Not sure what colour temperature to choose? This guide might help.
  • Need a suitable LED transformer? We recommend our low load YT50L.

Our 3W MR11 LED dimmable light bulbs are the ideal replacement for your existing halogen lamps up to 40W.

This is an Dimmable MR11 LED bulb you won’t be disappointed in, built with an all aluminium chassis.

It is also  sometimes referred to as GU4 spotlight, which refers to their particular fitting.

Using only the best LEDs they produce  a fantastic light output with a high CRI (Colour Rendering Index).

Not sure what colour to choose? Let us help

See our dimmable MR11 LED  working here , we also have compatible LED transformers

*Designed to work with most existing transformers and dimmers.

We have some facts about LEDs that may interest you here.

Also see our Dimmable G4 and G9 LED Bulbs.


Technical Data

Wattage:              3W

Dimmable:          Yes

Beam Angle:       45°

Colour Temp:     2700K or 4500K

Lumens:               230lm / 260lm

CRI:                      >80

Voltage:                12V

Base:                     GU4

Part No:              MR11-45-4500  – (4500K)

Part No:              MR11-45-2700  – (2700K)





Free Delivery on orders over £120 applies to the UK ONLY (Exclusions apply)


  • UK Standard delivery                (3-5 Days)                   £9.00
  • UK Standard >£120                     (3-5 Days)                    FREE
  • UK Express                                   (2-3 Days)                   £18.00
  • UK Next working day*                  (1 Day)                      £24.00
  • UK Next Working day AM*          (1 Day)                      £30.00
  • Europe (See Cart/Checkout)    (3-5 Days).    From   £24.00

Excess length charge is £15 for fittings between 1.2m and 1.99m in length

Excess length charge is £34.80 for fittings of 2m or more in length

* Next working day – Orders are processed Mon-Fri only and must be place by 1pm.  Orders placed on a Friday after 1pm will not be process until Monday and therefore delivered Tuesday.



  • Fittings with emergency packs take approx 1 week as they are assembled to order.
  • We do not refund purchase postage charges on returned goods.


Export Delivery Trade Terms

All our orders outside the UK are delivered DAP (Delivered at Place) Terms unless with prior agreement.

This means that you will be responsible for and DUTY and/or VAT payments that are applicable in your country.


Delivery Time

Nearly all orders are sent via courier, and a signature is required.

UK Standard or free delivery is about 3-5 days.

UK Next Working Day is the next working day

All European deliveries take 2-4 days.

Rest of world deliveries take around 6-8 days.

If your country is not listed please contact us for shipping and order placement on +44 1727 600102.

Backorders will be delivered as quickly as possible (Usually within 28 days) we will notify you by email of an expected delivery date.

Delivery times are approximate, please do not book and trades until you have a confirmed delivery date, or have taken delivery.  We do not accept liability for any missed delivery dates, direct or consequential.   As per our terms and conditions.


We have a 30 Day return policy, however the good must be unused , in their original packaging and as new.

There is a 12% restocking charge for returned items.

Custom made or made to order are not returnable, creditable or exchangeable.

If you need to return something or the goods are faulty please contact us on +44 (0) 1727 600102 or email [email protected] before sending anything.

We recommend using a tracked service for returns, please note we only pay return postage if the goods are proved faulty.


At Sera Technologies we are proud to offer high quality products at a fair price, with many available for next day delivery.

Products have a Warranty of between 1 and 5 years, please see the product pages for detailed information.

So rest assured that if you have a problem with any of our products we will sort it for you as quick as we can.

You can contact us by email, LiveChat or on the telephone.

You will require you original order details, if you did not purchase direct please contact your supplier for assistance.