Siemens 192-208 Room Temp Thermostat, Pneumatic, DA Heat, RA Cool, Fahrenheit, 2-pipe

Siemens 192-208 Room Temp Thermostat, Pneumatic, DA Heat, RA Cool, Fahrenheit, 2-pipe. Siemens TH 192 S Thermostats are proportional single out, single setpoing, 1 or 2 pipe sensor controllers. They include wall mouting plate and various rough in terminal box options.