Does the job beautifully
I bought two of these for a halogen to LED 12 volt downlight conversion and an incandescent to LED 240 volt light bulb conversion. One fed a bank of 5 x 240 to 12 volt electronic transformers (each feeding one 6.5 watt LED downlight) and the other a bank of 3 x 3 watt bulbs.
As part of the downlight conversion, I also had to replace the transformers with properly LED-compatible ones - the existing ones were rated at a higher power rating for halogen bulbs and either didn't work at all with LED bulbs or wre plagued with flickering problems.
The same thing with the existing dimmers, which were designed for halogen and incandescent loads. The LED bulbs worked with theirs but didn't dim at all, while the LED downlights either didn't work at all at any brightness, or worked only intermittently and flickered with anything less than full brightness.
The upshot - both dimmers work perfectly.
The downlights go down to about 20% brightness (good enough for me) before some start to flicker - not bad given the downlights themselves are technically "non-dimmable". (I will replace them with fully dimmable LED downlights in the future). These dimmers have a very useful feature where you can mount the knob on the shaft in a position that creates a mechanical stop at any point in the range - so I have set this one to go as low as possible before flickering starts.
The 240 volt bulbs go down to about 10% brightness through the full range of the dimmer without flickering. These bulbs ARE specifically rated as "dimmable", however.
One word of warning - among my five brand new LED-compatible electronic transformers, one had occasional problems getting its downlight to start up on full brightness (it came on eventually) and never got it to start on minimum brightness. So I replaced this brand new transformer with another one and this downlight is now working perfectly too.
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