192-203K | Room Temp Thermostat, Pneumatic, RA, Heat/Cool, Fahrenheit, 1/2: Setpoint Knob | Siemens (OBSOLETE)

This 192 Powerstar single setpoint pneumatic Room Thermostat is reverse acting for heating or cooling applications, 18 to 25 psi air supply provides proportional single output, single setpoint, two-pipe high air capacity, with relay, room temperature control. Fahrenheit scale with 1/2" setpoint knob option. Wall plate and mounting screws are included.