Fireye 4-128-1 Firetron Cell 321702-401 The enclosure is designed to

The enclosure is designed to shield the thermistor from direct sunlight to prevent "false highs" in temperature readings

Protects expensive components like HVAC compressors and expansion valves from particulate damage and sludge buildup

eliminating the risk of hunting or improper refrigerant saturation in Trane and American Standard heat pumps and air handlers

Ensure your fan blade pitch is compatible with clockwise rotation to maintain proper airflow direction

Precision Diagnostics: Facilitates faster troubleshooting with clearer communication between the main control panel and the expansion modules

Fireye 4-128-1 Firetron Cell 321702-401 The enclosure is designed toThe Fireye 4 128 1 Firetron Cell is a high sensitivity cadmium sulfide photocell engineered exclusively for use with the Fireye 48PT1 lead sulfide infrared scanner. Designed for precise flame detection in industrial and commercial burner applications, this component monitors infrared radiation emitted by combustion. The 4 128 1 operates as a resistive element that decreases in resistance upon exposure to infrared energy, providing the primary signal