These units are much brighter than anticipated and although operate well in their stand-alone mode, I have connected these via a DMX controller and they become very impressive being able to change colour, speed and dimension of the fixture. I would recommend anyone buying these to take the time to set up in DMX mode. They will not be disappointed. Although being delighted with these products, the only criticism I have is that I understood that they had IEC mains input and output and even on the packaging box it states and displays mains in and out. However, the actual fixture only has mains in. This obviously doesn?t affect the performance of the fixture it would have just meant that linking up to other bits of kit would have been easier. These fixtures represent excellent value for money. Just the box isn?t right.