Siemens 192-226 Pneumatic Room Thermostat Dual Setpoint, Day/Night/Vent, DA, 7/30C

Siemens 192-226, Room Thermostat, Pneumatic, Dual Setpoint, DA, D/N/Vent, Celsius, 3-pipe.

Powerstar 192 series Day/Night/Vent Pneumatic Room Thermostat with vent, direct acting for day/night applications, 18 psi day and 25 psi night, proportional dual setpoint, 3-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.