Good thermostat at an outstanding price. 7 day programmable make this a useful thermostat. Manual dial on end is unique but not a problem to use. I am very 25° to 1° C). For example, if HVAC CYCLING is set to 2.0° F and the 3M-22 is set to 70°F, the heat cycle will start when Many cooling and heating problems can be traced back to a bad thermostat. Like the name suggests, you control the temperature by setting it manually.Press and hold to set the time in the fast mode. • Press HOME to store your settings. This Thermostat comes preprogrammed with an energy saving program. This