Chauvet DJ EZLink Par Q4 BT ILS EZLink Par Q4BT ILS is a battery-operated, quad-color (RGBA) LED Par with built-in Bluetooth® wireless technology so you can control directly from a smart phone or tablet without any additional hardwareCutting-edge ILS (Integrated Lighting System) technology means this powerful par can be used with the ILS ecosystem which makes creating coordinated light shows across an unlimited number of different fixture types fast and easy. And the wireless options keep coming with the addition of D-Fi USB compatibility for wireless lead/follower or DMX control. Of course, convenient, wireless non-DMX control is possible using the IRC-6 remote. Generate a broad spectrum of colors and achieve natural-looking color temperatures with punchy amber LEDs and generate eye-catching effects with sound-activated and automated programs.