they require manual calibration

it supports a 650 psig maximum working pressure

When integrated with the MDL sync module

Precise Switching: 3PDT configuration allows for complex circuit logic

the case can handle ambient temperatures up to 140°F

Schneider Electric (Barber Colman) AT-603 Subbase Els PW 17895 they require manual calibrationThe Schneider Electric (Barber Colman) AT 603 Subbase is a precision engineered mounting platform designed for single thermostat selector switch applications. Built for professional HVAC technicians and contractors, this dual switch thermostat subbase provides the essential interface for complex environmental controls, specifically accommodating most single electric room thermostats. The unit features a robust architecture housing one DP4T switch and