Ranco C Series controls. Mechanical temperature controls typically used for heating and cooling applications.
Resistance Heat Thermostat for Heat Pumps, SPDT, No Off Position, Range -1°F to 63°F Differential 5°F, Capillary 30" With Bulb
Single Stage Heating or Cooling Control With 36" Capillary Tube With 3/8"x9" Bulb
Manual or Automatic Heat/Cool Change-Over, Heating Range 64-94°F, Cooling 71-101°F With a 3.5°F Differential
Type C/DF Discharge Feedback Thermostat, Manual or Automatic Heat/Cool Change-Over