specifically calibrated to provide a constant bleed of 1

Extended Lead Wires: 24-inch leads simplify installation and provide extra reach for complex control cabinet wiring

ensure your specific application requires the L210-40 setting

and flame sense (S1/FC) align with your actual equipment layout

System Sensor 2151 Smoke Detector Els PW 17895 specifically calibrated to provide aThe 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