If these external factors are ruled out

As a genuine Carrier OEM part

As an OEM Fenwal DSI electrode

As a direct acting controller

it provides reliable on-off service for fan coils

Maxitrol T244A Selectra Stat R-410A If these external factors areThe Maxitrol T244A Selectra Stat is a precision electronic temperature sensor designed for wall mount installation in commercial and industrial HVACR heating systems. Operating within a 40 80 degrees F temperature range, this modulating space sensor provides high accuracy resistance signals to the Selectra amplifier, ensuring stable discharge air temperatures. The T244A is a critical component for maintaining consistent thermal environments in large