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The DIVERSITECH T150K is a set of replacement keys designed for use with universal thermostat lock covers. These keys allow HVAC technicians and facility maintenance staff to access locked thermostat enclosures without damaging the lock housing or the thermostat itself. The T150K is an OEM-style replacement part, making it a direct fit for compatible DiversiTech universal thermostat lock assemblies. Small and compact, each key measures 1 inch in length, 1 inch in width, and 1 inch in height, making them easy to carry on a service truck or store in a tool kit.
This replacement key set is suited for commercial and residential HVAC applications where thermostat lock covers are used to prevent unauthorized temperature adjustments. Common install scenarios include multi-tenant buildings, schools, hotels, offices, and light commercial facilities where climate control access must be restricted. Technicians servicing or programming thermostats in these environments will need the correct key to open the lock cover before performing any adjustments.
Designed as an OEM-style replacement for DiversiTech universal thermostat lock cover assemblies. Refer to the original lock model documentation to confirm key compatibility before ordering.
These replacement keys are intended for use by licensed HVAC technicians and qualified service personnel. No tools or electrical shutoff are required to use the key itself, but always follow site safety protocols and thermostat manufacturer guidelines when accessing and adjusting thermostat settings. Keys should be kept secure to maintain the integrity of thermostat access control systems.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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