SLX Wireless Systems feature Shure's patented Audio Reference Companding for crystal-clear sound beyond the limits of conventional wireless technology. Automatic Frequency Selection Automatic Transmitter Setup 960 Selectable frequencies across 24 MHz bandwidth Detachable 1/4 wave antennas Microprocessor-controlled diversity RF presence LED 5-segment audio meter Multi-function, backlit LCD Low battery indicator Frequency and power lockout Rugged metal chassis Volume control on rear of unit 1/2 rack design Furnished rack hardware Non-slip bumpers for use out of rack XLR and 1/4" outputs INCLUDED: WL184 (Supercardioid): Recommended for sound reinforcement applications requiring high rejection of ambient noise and narrow pickup angle. Use of windscreen highly recommended. Pickup angle is 115 degrees. INCLUDED: SLX Wireless Systems feature Shure's patented Audio Reference Companding for crystal-clear sound beyond the limits of conventional wireless technology. Automatic Transmitter Setup Backlit LCD with timeout feature Frequency and power lockout 3-segment battery fuel gauge 2 AA batteries (included) provide 8 hours of continuous use 518 - 782 MHz operating range