Check the listing for details. Valcom V-1094A Page Port Preamp Expander for Paging Systems. Condition: New – Open box. Listed at 90.00 USD. The Valcom V-1094A Page Port Preamp Expander is a paging system accessory designed to enhance the functionality of intercom systems. Manufactured by Valcom, this product is specifically tailored for paging systems, offering a reliable and efficient solution for expanding the capabilities of such systems. Ideal for use in business, industrial, and facility maintenance settings, the Valcom V-1094A Page Port Preamp Expander provides a seamless and effective way to communicate and control access within predefined areas.