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For sale is a vintage Otis Elevator CPU/Processor Board, assembly number HT204349-5. This board is a critical component for Otis Elevonic 401 (E401) control systems. It features high-quality ceramic chips, including an AMI processor and a TMS9901L interface controller.
Key Features & Details
• Main Board Part Number: HT204349-5 / PCAS1666 / PCAN0034
• Daughterboard Attached: Includes modern replacement daughterboard ACA26800AKG (Revision Date: 2006-03-11).
• EPROMs Included: Features two programmed chips labeled CU1 and CU2 (marked "Copy 2014 Otis").
• Condition: Used, pulled from a working environment. The board is physically clean with all components intact. It features original factory "bodge" wire modifications as standard for this industrial revision.
• Configuration: Includes jumper setting diagrams for 16K, 32K, and 256K memory configurations.
Technical Specs
• Manufacturer: Otis Elevator Company
• Era: Late 1980s / Early 1990s (Main Board), 2006 (Daughterboard Rev)
• Status: "Not PET Addressable" (as per factory sticker)
Disclaimer
This is a specialized piece of industrial equipment. Please ensure compatibility with your specific system before purchasing. Sold as-is based on visual inspection. Perfect for building maintenance, spare parts inventory, or vintage computing enthusiasts.

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