The Sennheiser EM 100 G3 Wireless Receiver is intended to be used with the Sennheiser G3 wireless transmitters. The receiver features, true-diversity UHF reception, 42 MHz bandwidth, 1680 tunable frequencies, 12 compatible frequencies, and a comprehensive backlit display. With enhanced features that include automatic frequency scan, transmitter sync (via infrared), and sturdy metal construction, the EM 100 is well suited for professional applications in theaters, clubs, town halls, houses of worship, DJ applications, and more.