Schneider Electric TK-1801 Direct Acting Pneumatic Heat-Cool Thermostat with Zero Energy Band

The Schneider Electric (Barber Colman) TK-1801 is a direct-acting pneumatic room thermostat designed for dual heating and cooling control with a zero energy band feature. This professional-grade thermostat provides precise proportional control of pneumatic valves and actuators in commercial HVAC systems.

Key Features:

• Direct acting operation increases output pressure as temperature rises
• 55-85°F dial range with visible temperature display
• Zero energy band prevents simultaneous heating and cooling operation
• Adjustable throttling range for precise control
• Compatible with 15 or 20 PSIG supply air pressure systems
• 5/32-inch plastic tubing air connections
• Mounts to standard electrical switch box

This thermostat is ideal for controlling dual temperature applications in commercial buildings, offering reliable pneumatic control without requiring electrical power. The zero energy band feature ensures energy-efficient operation by preventing wasteful simultaneous heating and cooling cycles. Manufactured by Schneider Electric under the trusted Barber Colman brand name, known for over a century of HVAC control innovation.