Lavalier wireless system from BLX series that combines professional-quality sound with simple setup and an intuitive interface for legendary audio performance right out of the box. It includes the WL185 lavalier microphone, the BLX1 body-pack transmitter, the BLX4R rack mount receiver, single and dual rack-mount kit, two 1/4 wave antennas, a zipper bag, a power supply and two AA batteries. The rack-mountable receiver features rugged metal construction and offers simple setup and intuitive controls. One-touch QuickScan frequency selection quickly locates the best open frequency in case of interference, while removable antennas allow for quick antenna distribution. The receiver also offers XLR and 6.3mm output connectors, microprocessor-controlled internal antenna diversity, two-colour audio status indicator LED, adjustable output level and LCD display with detailed RF and audio metering. The durable body-pack transmitter features a lightweight, ergonomic design and adjustable gain control. It provides quick and easy receiver frequency matching and TQG connection for use with Shure lavalier, headset, earset and instrument microphones and guitar cables. It also features an easily accessible On/Off switch and provides up to 14 hours of operation with two AA batteries within 100m transmission radius. The cardioid lavalier microphone with a 130 degree pickup angle is recommended for general purpose sound reinforcement applications requiring good rejection of ambient noise. It has a 1.2 meter cable terminated with a miniature 4-pin mini connector and the included tie clip can be rotated in 90 degree intervals for placement flexibility. The microphone features the CommShield Technology, which guards against interference from cellular RF devices and digital body-pack transmitters. Frequency: 662-686 MHz