Shure QLXD4 Half-Rack, Single Channel Digital Wireless Receiver, G50 For this wireless system component to work, please make sure your transmitter and receiver match in frequency range (style) Includes QLXD4, hardware for rack-mounting, power supply, two 1/2 wave antennas, 2 BNC cables, 2 BNC bulkhead Adapters, and user guide Half-rack QLXD4 Digital Wireless Receiver quickly finds open frequencies and deploys them to transmitters via the one-touch sync function Ethernet networking enables networked channel scanning and Wireless Workbench software integration for remote control of receiver settings from PC/Mac; remote monitoring and control from iOS devices also is available via the ShurePlus Channels Mobile App AES 256-bit encryption for secure wireless transmission and digital predictive switching diversity ensures solid RF connection Works with QLX-D Digital Wireless Systems