Pneumatic Thermostats
by Siemens Building Technologies
- Retroline Heat/Cool Retrostat Pneumatic Room Thermostat
- 2-Pipe
- Dual Set Point
- Direct Acting Heat - 18 psi
- Reverse Acting Cool - 13 psi
- Fahrenheit Scale
- Replaces Honeywell TP972A1002, 1028, 1036, and 1101