192-225 | Room Thermostat, Pneumatic, Dual Setpoint, RA, Day/Night, Celsius, 2-pipe | Siemens

This 192 Powerstar Day/Night Pneumatic Room Thermostat is reverse acting for day/night applications, 18 psi day and 25 psi night, and provides proportional dual setpoint, two-pipe high air capacity room temperature control. Celsius scale. The thermostat automatically resets the room temperature setpoint during unoccupied hours by changing the air pressure to the thermostat. A manual override feature allows occupants to switch to day mode. The override returns to night mode the following night. For a complete list of Siemens TH19X Powerstar Room Thermostat mounting hardware, covers and accessories, See Section A of Siemens Master HVAC Products Catalog, part number 144-001.