Schneider Electric (Barber Colman) TK-1801 Direct Acting Zero Energy Band Pneumatic Thermostat Heat/Cool

The Schneider Electric (Barber Colman) TK-1801 is a proportional thermostatic control that provides heating and cooling with a zero-energy band for increased comfort and energy efficiency in residential and commercial buildings. This model adopts a more sophisticated strategy than conventional thermostats with set on/off cycles. Imagine a thermostat that doesn't needlessly turn on and off; instead, it continuously checks and modifies your HVAC system to keep it within the appropriate temperature range. The proportional control mechanism is employed by the TK-1801. The thermostat alerts the heating or cooling system in proportion to the temperature deviation from your setpoint. In order to reduce on/off cycles and provide smoother temperature management, this signal progressively increases or drops in intensity as the temperature gets closer to the target level.