Power Supply: 100~250V, 50/60HZ, 20W Features: The laser beams are controlled by sound active, advanced design program, more than 50 laser patterns, over 200 laser effects. The unit will shut off laser when the music stops. Master/slave control for synchronization job Scanner: Micro-step motor scanner, big angle scanning Play Mode: Sound Active, Master/Slave Interface: 3 pins XLR for Master-Slave linking