Shure BLX1 Wireless Bodypack Transmitter with On/Off Switch, Adjustable Gain Control, TQG Connector - for use with BLX Wireless Microphone SystemsBLX Wireless Systems are designed for small venues and provide wireless microphone operation with straightforward setup and an easy to use interface. The system supports multiple transmitter types, including handheld, bodypack, headworn, lavalier, and instrument clip on options, and is compatible with single channel, dual channel, and rack mounted receivers.