ADJ Products SWEEPER BEAM LED ETL 4-Button Dmx Led Display 3 Operational Modes: Dmx Controller, Master/Slave & Sound Active 4 Dmx Channel Modes (1, 6, 11 Or 15 Ch.) Dmx-512 Protocol Electronic Dimming: 0 - 100% Includes Exciting Sound Activate Built-In Programs Led Pulse & Strobe Effect Includes Exciting Sound Activate Built-In Programs Led Pulse & Strobe Effect