Yes my question also. Im a 24v or 220--240v is better. also can you include a dimmer? Can i put 15 lights in sequence? How many Lumens are they? Do you have any brackets for mounting them? Is the power cable flexible or ridged?

Hi RonMarti + Q5. Answers to your questions:
1) These operate only on 12 volt DC. Take a look at our LP-Series Power Kit that we offer - it includes a 110V-277V auto-switching weatherproof power supply, weatherproof enclosure for power supply, and a weatherproof terminal block enclosure.
2) On the LP-Series Power Kit, you can operate up to sixty luminaires. It's important to read the installation instructions, as the luminaires must be wired in parallel, not in series. Also important to note that they will not be warrantied if operated on a dimmer. They are not dimmable.
3) Lumen output is 19 lumens - not intended to be a halogen replacement, but incredibly powerful in such a small package, ideal for framing of intimate spaces, wall-washing, step-lighting, entranceway marking, floor-washing, etc.
4) Regarding mounting brackets - if installed flush into wood, no brackets are required - only drill a 30mm hole in your surface using a 30mm forstner bit, at 12mm depth (1/2 inch), then finish the remaining hole with a 3/8" bit.
5) The cable of the luminaire is quite flexible. Consult the installation instructions for important cautions and notes.