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    Web Mountain SPIM-01 UPB Serial Computer Interface Module — Specifications

    September 08, 2026 2 min read

    Specifications for the Web Mountain Technologies SPIM-01 UPB serial plug-in computer interface module.

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    Full text manual (for reference)

    Product datasheet for the Web Mountain Technologies SPIM-01 — a UPB serial plug-in computer interface module for connecting a PC or NetPlace server to a UPB (Universal Powerline Bus) whole-home control network.

    Overview

    The SPIM-01 converts UPB signals from a computer or NetPlace server onto the home's existing AC wiring for transmission throughout the house. It plugs directly into a standard AC outlet and connects to a computer/server's serial port via a standard RS-232 DB-9 connector on the bottom of the unit. A pass-through electrical plug design means the module doesn't sacrifice outlet availability — a non-controlled outlet remains available on its face for other household devices.

    UPB technology uses standard electrical wiring for communication, offering stronger signal strength, lower noise susceptibility, and improved reliability compared to legacy powerline protocols like X-10 or CeBus. Individual homes are selective (no cross-over/interference from adjacent homes) and phase coupling is generally not required except in very large homes.

    Applications

    • Enables more sophisticated UPB control by connecting a computer directly to the UPB network
    • Paired with a NetPlace server, devices can be controlled via time-of-day schedules, triggered by external events, and included in unlimited scenes

    Installation

    Plug the module into a wall outlet, then connect it to a NetPlace server or PC using a standard RS-232 serial cable.

    Specifications

    Model Name Computer Interface Module — Serial Port
    Model Number SPIM-01
    Case Plug-in module with AC pass-through
    Dimensions Approx. 1.375″D x 2.375″W x 3.25″H
    Net Weight 4 oz
    Protocol UPB
    Input Voltage 120V AC ±10%, 60 Hz, 3-prong; pass-through, max load 15A
    Computer Interface RS-232 serial (DB-9)
    Certifications UL 1950, FCC Part 15 Class B
    Operating Temperature 0° to +50°C (-30° to 120°F)

    Manufacturer

    Web Mountain Technologies, LLC — 13882 E. Grand Ave., Aurora, CO 80015. Sales: 720-207-9174, Office: 303-627-1856, info@webmtn.com, www.webmtn.com.