Single channel wireless receiver with microprocessor-controlled internal antenna diversity. The durable BLX4E features simple setup, intuitive controls, and microprocessor-controlled internal antenna diversity. One-touch QuickScan frequency selection quickly locates the best open frequency in case of interference. For use with BLX Wireless Systems. Features XLR and ¼'' output connectors and Two-color audio status indicator LED. Frequency: 606-630 MHz