The Shure ULX Series wireless microphone systems provide professional wireless microphone solutions for broadcast, performances, conferences, houses of worship, schools, and businesses. The system includes the ULXS4 diversity receiver, ULX1 body-pack transmitter and WL185 lavalier microphone. The ULXS4 receiver operates on UHF frequencies, offering over 1400 user selectable frequencies to choose from. The dual antenna design represents diversity technology, which provides optimum resistance against RF interference and drop-out. Dual internal receivers are set to the same frequency and are constantly vying for the strongest reception. The receiver features a balanced XLR output that is switchable between mic and line level signal as well as an unbalanced 1/4" Phone output. A multifunction LCD provides group and channel information, transmitter battery life, and more. Two 5-segment LED's provide audio and RF metering. The ULX1 body-pack transmitter is light weight and portable featuring a belt-clip for use with camera and guitar straps, belts, waistbands etc. The transmitter also features over 1400 user selectable UHF frequencies and a comprehensive LCD displays group and channel information and more. An input attenuation switch allows 0dB and 20dB output. Adjustable audio gain control is provided and the transmitter boasts 8-9 hour battery life on a single 9V battery. The WL185 lavalier microphone features cardioid pick up pattern which minimizes off-axis noise and feedback caused by speakers or stage monitors. The WL185 features a 50-17,000Hz frequency response making it suitable for a wide variety of applications. ULX1 Bodypack Transmitter with WL185 lavalier Automatic Frequency Selection with group scan function Up to 1440 selectable frequencies 5-segment transmitted audio signal strength meter RF indicator 3-segment transmitter battery fuel gauge Advanced multi-function LCD displays group and channel Mic/Line switch Detachable 1/4-wave antenna XLR and 1/4-inch output Rugged plastic chassis 1/2 rack design