Yes, the internally dimmable led driver for SMT-012-200VT is single output type and just 2 wires.

Yes, we can suggest brand Lutron and Tridonic, they will perform well with our LED DALI dimmable led drivers. As usual, Lutron is more popular with North-Amerrcan market. 

You are supposed to buy DALI dimmable systerms and It has software you can setup in your PC. So that you can control the DALI diimmable project in your PC directly.

The metal junction box doesn't have a seprating ETL listing. So it's unnesessary for you do a separating ETL listing for those dimmnable led drivers.

Our DALI dimmable led driver conform to DALI protocol IEC62386.

We have made our DALI dimmable led drivers to be test with the LUTRON DALI system, which is no need DALI bus power. Hence, we didn't buy the DALI bus power before.

So, we're sorry, we didn't have a list for those DALI bus power.

The working mode of our dimmable led driver is electronic driver, which is different from the brands "Magnetitude" in North American market. 

Yes, all our led drivers run the leds like switching power source and this led driver you've mentioned is triac dimmable type, it should be dimmable with a triac dimmer.

UL annual fees will be charged by UL for once time each year. Its funtion is maintaining cost for the online UL file.

Actually, it's necessary for you to pay UL multiple listee cost and UL annual fees to UL if you would like to do UL multiple listing. And all the cost would be charged by UL directly.

Actually, we sugguest that our customers usel with forward edge triac dimmer for our 100-130vac VT series. And they work well with  forward edge triac dimmer.

Most importantly, there is almost  no any buzz during they work with forward edge triac dimmer.