STI STI-9110 Thermostat Protector with Key Lock
Overview
The STI STI-9110 is a mechanical key-lock thermostat protector molded from transparent polycarbonate designed to prevent unauthorized tampering with HVAC controls. Deploy this where thermostats face routine abuse — vandalism, accidental adjustment, or cost-shifting manipulation by facility users. The key-based access model requires no electronics or batteries, making it suitable for retrofit onto existing thermostat installations across facilities with multiple thermal zones or shared spaces requiring simple temperature-control governance.
Compatibility
The STI-9110 fits standard wall-mounted thermostats in both recessed and surface-mount applications. The frame includes pre-drilled mounting holes and accepts standard wall anchors and screws. Interior wall construction prevents selector dial and lever manipulation while maintaining air circulation through frame apertures — a critical requirement for proper thermostat operation without sensor interference. Compatible with any mechanical thermostat or energy sensor that mounts in a standard wall box footprint; verify your thermostat dimensions against the protector opening before order.
Installation Notes
Mount using the supplied anchors and fasteners to wall studs or drywall anchors appropriate to your substrate. The frame design accommodates both flush-mount (recessed) and surface-mount installation with optional spacers — verify mounting depth before installation. Frame apertures must remain unobstructed to allow unrestricted airflow to the thermostat sensor; do not seal or block ventilation holes. The key lock provides credential-based access; retain the key in a controlled location separate from the protected area.
What's in the Box
- 1x STI-9110 polycarbonate thermostat protector assembly
- 1x key lock mechanism with keys
- Wall mounting anchors (quantity per evidence not specified)
- Mounting screws (quantity per evidence not specified)
