System Sensor 2151 Smoke Detector Els PW 17895 Easy Readability: Features a 3

Easy Readability: Features a 3

this SWT1276 thermal switch offers the repeatability required to restore safe furnace operation without the nuisance tripping seen in lower-quality aftermarket alternatives

installing the correct restrictor orifice can stabilize the pressure switch signal and resolve intermittent ignition failures

This cover ensures consistent performance by shielding the internal force-balance assembly without interfering with air consumption or setpoint accuracy

this high limit safety control prevents short-cycling and protects the heat exchanger from structural fatigue caused by overheating

System Sensor 2151 Smoke Detector Els PW 17895 Easy Readability: Features a 3The 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