Siemens 192-228 Pneumatic Room Thermostat 2-Pipe, Heat/Cool, DA/RA, 7/30C

Siemens 192-228, Room Thermostat, Dual Setpoint, DA Heat, RA Cool, Celsius, 2-pipe.

Powerstar 192 series Heating/Cooling Pneumatic Room Thermostat, direct acting heating @ 25 psi, reverse acting cooling @ 18 psi, proportional dual setpoint, single output, two-pipe high air capacity room temperature control. Celsius scale. Wall plate and mounting screws included.