Studio Technologies Model 545A - 2-Wire to 4-Wire Intercom InterfaceThe Model 545AR interfaces one 2 channel analog party line (PL) intercom circuit with a 2 channel analog "4 wire" device. (The unit provides two analog input channels and two analog output channels). The Model 545AR is optimized for use with RTS TW series PL intercom circuits. Intended for use with 4 wire devices such as matrix intercom systems or other audio devices. Housed in a lightweight tabletop enclosure; optional mounting kits available.
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Studio Technologies Model 545A - 2-Wire to 4-Wire Intercom Interface