this one-pipe pneumatic sensor converts temperature readings into a linear 3 to 15 psig output pressure range

and the main integrated control board

eliminating the mounting and calibration risks of universal "will-fit" switches

Durable Construction: Multi-position mounting and a wide operating temperature range allow for versatile installation in various cabinet configurations

High Temperature Capability: Viton seals allow for reliable operation with hot water and chemical applications

Schneider Electric (Erie) T201 Thermostat 326058-757 this one-pipe pneumatic sensor convertsThe Schneider Electric (Erie) T201 Thermostat is a high performance 24V digital heat only thermostat engineered for precise temperature regulation in residential and light commercial hydronic or forced air systems. This non programmable HVAC control features a single stage heating interface with a dedicated Heat Off system switch, making it a reliable solution for boiler systems, unit heaters, and single stage furnaces where fan control or changeover