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The "F" indicates it is a fan switch (Normally Open)
For service professionals maintaining high-volume cooling units
providing a precise
Designed for high-temperature applications
OEM replacement ignitor designed specifically for direct discharge and package unit furnace applications
System Sensor 2151 Smoke Detector Els PW 17895 The "F" indicates it isThe System Sensor 2151 is a professional grade, low profile photoelectric smoke detector designed for precise performance in commercial HVAC and fire alarm systems. This 100 Series plug in head utilizes a state of the art optical sensing chamber and is engineered to provide stable detection in diverse environments. Technicians should note that this unit is the direct replacement for 2151+ and the 70 540000 001 models, ensuring seamless integration
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