Shure Wireless Boundary MicrophoneShure Wireless Boundary Microphone ULXD6 Transmitter The ULXD6 Wireless Boundary Microphone Transmitter from Shure is engineered for visibility in meetings and events where wired mics would clutter the table or create trip hazards. Its low profile boundary form factor sits flush on tabletops, keeping the speakers voice front and center while blending seamlessly with professional environments. Designed to work in concert with ULX D or QLX D digital