System Sensor 2D51 Sensor-For D4120 Detector

The System Sensor 2D51 is a low-profile photoelectronic smoke detector designed for use in HVAC air handling systems. Unlike traditional point smoke detectors, the 2D51 is specifically intended for installation within air ducts. When smoke enters the duct, the 2D15's state-of-the-art optical chamber detects changes in light scattering. This triggers an alarm signal that is sent to the building's fire alarm control panel. Made for compatibility with low-flow or no-flow air handling systems (up to 4,000 FPM), the 2D51 features a compact design (2 inches high and 4.1 inches deep) for easier installation within ducts. Additionally, its wide operating range (-4°F to 158°F) and tolerance for humidity (10% to 95%) ensure reliable performance in various HVAC environments. System Sensor 2D51 plays a vital role in early smoke detection within air handling systems, enhancing fire safety in commercial and residential buildings.