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    STI Thermostat Protector Series — Specifications (STI-9102/9105/9110/9115/9116)

    September 08, 2026 2 min read

    Specification sheet for the STI Thermostat Protector Series — polycarbonate protective covers guarding thermostats and energy sensors against tampering and accidental damage.

    💾 Download Original PDF
    Full text manual (for reference)

    Specification sheet for the STI Thermostat Protector Series (STI-9102, STI-9105, STI-9110, STI-9115, STI-9116) — polycarbonate protective covers that guard thermostats and energy sensors against tampering, vandalism, and accidental damage.

    Product Overview

    Molded of clear polycarbonate material, these protective covers are recommended for areas where abuse to a thermostat exists — including vandalism, accidental damage, or costly, annoying tampering by employees and guests. They're especially useful where thermostats are located in public areas. Holes in the frame allow air to circulate freely for proper operation of the protected thermostat or energy sensor, while an interior wall on the frame prevents objects from entering and tampering with the protected device.

    All STI polycarbonate covers, including the Thermostat Protectors, are backed by a three-year guarantee against breakage in normal use. Units ship complete with all mounting hardware.

    Key Features

    General

    • Offers excellent protection against tampering, abuse, and accidental damage without affecting thermostat operation
    • Includes a lock and key assembly (excludes STI-9116)
    • Three-year guarantee against breakage of polycarbonate in normal use

    Design & Construction

    • Holes in the frame allow air to circulate freely
    • Inner wall construction prevents tampering with dials and levers (excludes STI-9116)

    Installation

    • Easy and quick installation
    • Shipped complete with anchors and screws
    • Typical working properties of polycarbonate: -40° to 250°F (-40° to 121°C)

    Options

    • Models available for flush and surface mounted applications
    • Spacers available to accommodate exposed conduit

    Models Available

    Model Description
    STI-9102 Thermostat Protector, small, 1/4 turn lock — clear
    STI-9105 Thermostat Protector, small, key lock — clear
    STI-9110 Thermostat Protector, large, key lock — clear
    STI-9115 Thermostat Protector, dome shaped, tamper screws and bit — clear
    STI-9116 Thermostat Protector, dome shaped, standard mounting hardware — clear

    Accessories

    • KIT-900 — Clear, 2" spacer for STI-9110
    • KIT-901 — Clear, 2" spacer for STI-9105
    • KIT-905 — Clear, 1-1/4" spacer for STI-9105
    • KIT-H18053 — Two replacement keys for STI-9105, STI-9110
    • KIT-H19016 — Two replacement keys for STI-9102

    Warranty

    Three-year guarantee against breakage of polycarbonate in normal use.

    Manufacturer: Safety Technology International (STI) · 248-673-9898 · info@sti-usa.com · www.sti-usa.com