Up for sale is a rare, vintage Cardinal Technologies Professional Message Center intelligent computing and telecommunications terminal.

Manufactured in Lancaster, PA, by Cardinal Technologies—the successor company founded by former RCA executives to continue the iconic RCA APT (All-Purpose Terminal / VP4800 / VP5800) line—this unit is a self-contained telecomputing system built directly into a full-stroke mechanical keyboard chassis. It functions as a complete standalone videotex and ASCII communications terminal without requiring an external PC tower.

Condition & Preservation Notes

• New Old Stock (NOS) / Unused: Appears to be complete and unissued New-in-Box. The keyboard unit remains sealed inside its original manufacturer plastic sleeve.

• Cosmetics: Plastics show bright, clean factory color with zero yellowing, wear, or grime. Keycaps, legends, and badging are crisp and flawless.

• Packaging: Includes original cardboard shipping/storage carton, custom yellow foam protective end caps, and internal divider tray.

Onboard Hardware & Rear I/O Features

• Video Displays Supported: Composite Video (RCA out), Analog RGB (multi-pin DIN), and RF / TV coax video output.

• Telephony & Communications: Dual RJ-11 phone jacks (Wall to Phone) tied to the internal auto-dial/auto-answer modem, with dedicated keypad dialing keys (Tone, Pulse, Dial, Hang-Up).

• Data Ports: Standard DB-25 RS-232 serial interface and edge-connector parallel printer interface.

• Expandability: Card-edge memory expansion slot on the rear panel.

• Power: 5-pin DIN DC power input jack with integrated rear rocker switch.

What’s Included

• Cardinal Technologies Professional Message Center terminal keyboard unit (in factory plastic)

• Original AC power supply adapter (5-pin DIN connection)

• Composite / RF audio-video connection cable

• Modular RJ-11 telephone line cable

• Original Cardinal Technologies User Manual & Warranty paperwork (August 1988)

• Original factory packaging and foam inserts

Sold as a vintage collector’s item / NOS computing hardware. Due to age, full operational capabilities are untested to preserve its factory-wrapped condition.