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Up To 5 Year Warranty

Dimmable 3W MR11
LED Bulb

£ 8.00 inc. VAT
  • 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 YT50LZ.
Free UK delivery on orders over £80 3 year warranty


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

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

Also sometimes referred to as GU4 spotlights, which refers to their particular fitting.

Using only the best Cree XB-D LEDs which provides a fantastic light output with a high CRI (Colour Rendering Index).

Not sure what colour to choose? Let us help

See our dimmable LED MR11 working here 

We also have compatible LED transformers

Designed to work with most existing transformers and dimmers. Visit Our FAQs.

Technical Data

Beam angle:  45 degrees
Voltage:  12V
Base:GU 4
Approvals:Ce & RoHS
Colour temperature and Lumen output:
Warm White – 2700k  
 230 lm
Natural White – 4500k
 260 lm
Cool White – 6000k
Equivalent to40W


,MR11 LED 3W Dimmable bulbs are the ideal replacement for existing halogen lamps up to 40W. Our bulbs are available in Warm White and Natural White.

Built with an aluminium chassis for greater heat dissipation, our bulbs work for an extended period of time (rated life 30,000 hrs) and are designed to fit into most existing light fittings.

SERA LED MR11 bulbs are suitable for suitable for home, retail, commercial and office use.

The SERA range of LED light bulbs has been developed for its elegance of design, low energy usage, longevity of use and ease of installation, as well as representing the latest LED lighting technology.

We hold stock of all our bulbs in the UK and in most cases offer next day delivery. If this is not the case, we aim to deliver within 21 days.

We also sell other best-selling sizes of LED bulbs including AR111GU10MR16,  Candle bulbs Strip Tape lights and Floodlights.




Delivery and Returns

Free Delivery on orders over £60 applies to the UK ONLY


  • UK Standard Delivery              £3.90
  • UK Standard >£60                    FREE
  • UK Next Working Day *           £11.94 (Suspended At Present)
  • Europe /ROW                See Checkout

*For those who select next working day (Premium service) your orders get priority. Meaning we will ship them the same day as long as the order is received before 1300 on a work day (Mon-Fri). Orders received on a Saturday or Sunday will be dispatched on the Monday (excluding bank holidays), which means you will receive them following day.

** Excess Length Charge if £26.99 for fittings of 2m in length

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 4-6 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.


  • All Anolis Fittings are built to order with a 4-6 week Lead time.  Please contact us to confirm delivery.

  • All Acclaim Lighting fittings are shipped direct from the factory, lead time is 10-14 days.  Please call us if you require urgently.

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.

NOTE:  Not all products can be returned due to the hygienic nature of them, these will be identified in the product description.

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 01727 600102 or email before sending anything.

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

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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.

All PPE has a minimum shelf life of 6 months, however most are years.

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.