Temperature Controllers  This category contains many temperature
controllers from brands such as Honeywell, Johnson Controls,
White Rodgers and Ranco.  Sort By:  View By:  More about
Temperature Controllers  Temperature controllers are used to
regulate temperatures without extensive operator involvement.
Temperature controllers can be used in a wide range of
applications. Certain features should be considered before
selecting a temperature controller, with the most important
being the controller's temperature range. Other factors that
should be considered are the application type, input sensor
type, number of outputs, and the type of outputs.  Pneumatic
temperature controllers regulate air and liquid temperatures.
They are designed for heating and cooling unit ventilators and
fan coil units. Pneumatic temperature controllers operate in
three phases. First, the pneumatic temperature controller senses
the temperature being monitored. It then attempts to balance its
internal lever system. Finally it adjusts its