For this wireless system component to work, please make sure your transmitter and receiver match in frequency range (style);Automatic Frequency Selection Automatic Transmitter Setup960;Microprocessor-controlled diversity RF presence LED5-segment audio meter Multi-function, backlit LCD Low battery indicator;Furnished rack hardware Non-slip bumpers for use out of rack XLR and 1/4 output;Frequency and power lockout Rugged metal chassis Volume control on rear of unit1/2 rack design;Selectable frequencies across 24 MHz bandwidth Detachable 1/4 wave antennas uts