Ideal for push-to-talk microphones, FlexPort Audio Input Transmitters serve as remote input modules for SonaFlex SF-16M matrix amplifiers. FPM-B accepts three- or four-wire microphone or mixer outputs for the SonaFlex system via Cat 5. FlexPort transmitters are available in several different styles, including balanced line XLR, digital SPDIF and analog RCA audio signals. Audio signals are transmitted to an SF-16M via Cat 5e/6/7 cable up to 500 feet and made available to specified amplified outputs, and can be shared with up to three additional SF-16M amplifiers. Each transmitter has a convenient override button and the FPM-B includes an optional connection for override via microphone push-to-talk switch. Removable, four-wire termination plug.