Lockable thermostat heat only

[David P.]

Hello, I have a 3 unit property, and I pay the heating on the property I do want to upgrade the thermostat before the colder weather which is recommended heat only I have radiant heat I looking for thermostat that I can lock the temperature tenants cannot raise the temperature.

[Nathan Miller]

It may not be OK with your state to restrict access to the thermostat.  Tenants have a right to a comfortable environment and their comfort level might not always match yours.  But you could get a thermostat where you can restrict the maximum highs and lows of the unit to make sure they don't exceed those thresholds.  A lot of thermostats do this, including the Nest stats I believe.