Velleman usb controlled dmx interface kit velleman k8062 the velleman usb controlled dmx interface kit enables you to control dmx lighting fixtures using a pc and usb interface test software and dmx light player software is included and a dynamic link library dll is provided to write your own software the device includes a stand alone test function that outputs all 512 channels at a time with adjustable levels velleman k8062 usb controlled dmx interface electronics kit