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The System Sensor ST-10 is a heavy-duty metal sampling tube engineered specifically for HVAC duct smoke detection in large-scale commercial air handling systems
a precision-wound compression spring
With a ± 3% humidity accuracy across a 10% to 90% RH calibrated range
Prevents ignition failure and furnace short cycling caused by inadequate negative pressure in the heat exchanger
Carrier 10351002 Blower Wheel 321894-708 The System Sensor ST-10 isThe Carrier 10351002 Blower Wheel is a critical OEM replacement part designed for precision airflow management in HVAC air handlers and specialized PTAC units. Built with a CW hub end rotation and a center hub position, this 4 inch diameter blower wheel ensures balanced rotational stability, minimizing vibration and mechanical stress on the blower motor. The tabbed wheel construction and high grade steel material provide the structural integrity
