System Sensor N04-893-04 Photoelectric Smoke Detector Head

System Sensor N04-893-04 is a ceiling-mount photoelectric smoke detector head designed for use with conventional fire alarm systems and is commonly installed in office buildings, industrial facilities, schools, hospitals, and other commercial properties where reliable smoke detection is required. It operates on 12–24 V DC and features a flame-retardant plastic housing with LED indication for alarm and status. The detector is compatible with detector bases and is intended for commercial and industrial fire protection applications; its operating range is 0 °C to +49 °C with up to 95% relative humidity, non-condensing. It is UL listed and designed to integrate with commercial fire alarm systems. Common replacements include System Sensor 2300TB, 2400, and 2451.