4vwin LED Power Supply Driver Transformer Constant Volatge for 12V AC/DC LEDs, LED Strip Lights, GU10, G4, MR16, MR11 Bulbs

Just replaced old transformer with this 20W LED driver. Used with 3 x 3.4 Watt LED bulbs and works fine without any issues. Just check your Amp rating of your LED bulbs first, mine were 0.44A, so 1.32A in total and below the 1.66A of this LED driver. The reason your LED lights flicker could be due to going over the current output rating of the transformer, this then sends the transformer into self protection due to being over max current, remove a bulb and it works fine. Even though you are under the maximum Watts output you maybe over the max Amp rating of the transformer, hence the flicker until you remove a bulb and lower the current drawn from the transformer.

This product does exactly what it says. I used it to provide a 12v supply to the light in an electric flame effect fire. It was easy to install and easy to do correctly. It is working perfectly.

Used it to convert battery operated LED mirror lights to mains operation. Worked perfectly! Lights now brighter than ever and don't need 8 batteries replaced very frequently to do the job.Highly recommend.

This works well on four led mr16s tbag wriggled to work on the old transformer. The connector blocks on this transformer are a bit fiddly and would be difficult to use in a limited space

I attached three 5 watt LED bulbs, but they were all flashing. When I just attached two bulbs it worked fine. Looks like maximum output is actually between 10 and 15 watts

This is able to drive 2x 5W LED, but not 3 of them. That means the advertised power output of 20W is incorrect. 12W is more likely.

Not really happy with this power unit, it runs very hot I wouldn't mind if it was running a long string. But it's a one meter long strip takes 10 mins to get very hot.