The Honeywell T822L1000 is a T822L series non-programmable single stage thermostat, able to be set from a range of 45F to 95F. It works specifically with cooling applications.The T822L1000 from Honeywell is a T822L Series non programmable single stage thermostat, able to be set from 45F to 95F. It provides the user with 24 Vac control of heating or cooling systems. There is a vented cover to improve temperate sensing and included thermometer and setting scale. The thermostat is mercury-free and solely for cooling purposes. It is able to be mounted directly on the wall or on a vertical outlet box.