The T-4003 Submaster Thermostat is a high volume proportional thermostat. The T-4003 can be reset from a remote location, or in accordance with a referenced temperature variation.
Refer to T-4000 Series Pneumatic Room Thermostat Product Bulletin (LIT-7171060P) for important product information.
Figure 1. T-4003 Submaster Thermostat
