The BLX4 receiver's one-touch QuickScan frequency selection finds the clearest available channel and tunes the unit to it. Its front panel LCD display indicates the group and channel it is tuned to, allowing you to set the BXLR2 transmitter to match. A dual-colored LED indicator displays green for normal audio levels and red to alert you if your levels are clipping. The two antennas have microprocessor controlled internal diversity to help prevent interference.
Two included AA batteries provide the BLX2 transmitter with up to 14 hours of operation. You can use up to 12 compatible BLX systems simultaneously per frequency band.