The Whadda WSL8062 Interface unit can control DMX fixtures using a PC and USB interface. Test software and "DMX Light Player" software is included, a DLL is provided to write your own software, furthermore there is a stand-alone test function that outputs all 512 channels at a time, with adjustable levels. Kit includes: nice enclosure, USB cable, CD with: test software, DLL for own developments & free DMX light player.