The wireless WiCOS DV delegate unit is an ideal choice for mobile conference systems where flexibility and reliability is a must. It has been designed with utmost simplicity for the participants in mind. Its compact and elegant design harmoniously blends in with any conference room. Each unit holds its own high-performance, battery pack with an operating time of 20+ hours. Once permission to speak is granted and the microphone goes live, indicated by a LED ring, the built-in speaker automatically mutes to prevent feedback noise. Participants can connect two headphones or neck induction loops for individual volume adjustment or to follow a simultaneous interpretation. The wireless signal transmission of WiCOS is completely encrypted to be safe from unauthorized listeners. In addition to WiCOS D three voting buttons (+ / 0 / -) and individual channel selection with two OLED displays are provided.