The SLX2/SM58 Handheld Wireless Microphone Transmitter works with SLX Wireless Systems. Sound installations and working bands need powerful wireless tools that can be set up quickly and used fearlessly. Shure's rugged SLX UHF Wireless Systems more than deliver with innovative setup features, exceptional wireless clarity, and legendary Shure microphones. Offering up to 20 compatible systems in a single installation, SLX smoothly integrates into houses of worship, lecture halls, conference rooms, and mobile gear cases. SLX Wireless Systems feature a wide variety of industry-standard handheld vocal microphones. SLX Wireless Handheld Transmitters includes timed backlit LCD display, frequency and power lockout, and "Mute" functionality. The transmitter design allows for interchangeable microphone cartridges. Options include the BETA 87A, BETA 87C, BETA 58A, SM86, and the legendary SM58.