I've just received this and wired it up. Its very bright. It gets hot very quickly and will certainly need a large heatsink. Multiple lower wattage units might be easier to keep cool. Power is applied via two small solder tabs on the top surface. The bottom surface is bare aluminum. Note that you are getting a single unit, not the two depicted.

I've just received this and wired it up. Its very bright. It gets hot very quickly and will certainly need a large heatsink. Multiple lower wattage units might be easier to keep cool. Power is applied via two small solder tabs on the top surface. The bottom surface is bare aluminum. Note that you are getting a single unit, not the two depicted.

I've just received this and wired it up. Its very bright. It gets hot very quickly and will certainly need a large heatsink. Multiple lower wattage units might be easier to keep cool. Power is applied via two small solder tabs on the top surface. The bottom surface is bare aluminum. Note that you are getting a single unit, not the two depicted.

EXCELLENT

EXCELLENT

EXCELLENT

Although I have not set these up yet, they appear to be very good.

Although I have not set these up yet, they appear to be very good.

Although I have not set these up yet, they appear to be very good.