Fire-Lite SD355 Fire Alarm Smoke Detector Head - This addressable plug-in sensor provides rapid, reliable detection for life-safety systems. - Operating voltage range of 15 to 32 VDC for broad system compatibility - Low standby current of 300 µA ensures energy-efficient operation - Wide sensitivity range of 0.5% to 4.0% per foot for precise environmental monitoring - Operating temperature capacity from 32°F to 122°F to suit various facility conditions - Compact 2.1-inch height to maintain a low-profile installation appearance

Compared to legacy analog devices, the SD355 utilizes advanced communication protocols that allow for faster response times and reduced false alarms. This modern unit builds upon established design standards, providing a seamless upgrade path for facilities looking to improve their current fire detection infrastructure without replacing the entire control panel ecosystem.

Advanced Detection Engineering

The SD355 integrates cutting-edge photoelectric sensing technology to identify combustion particles with high accuracy. Its sophisticated onboard microprocessor continuously monitors environmental data, effectively filtering out transient noise to maintain a stable, reliable alert threshold in complex commercial environments.

Optimized System Performance

Designed for professional-grade life safety, this detector head features dual-color LEDs that provide clear, 360-degree visibility for status indication. The streamlined communication loop ensures that the fire alarm control panel receives real-time diagnostic information, enabling faster maintenance cycles and enhanced site-wide awareness for building operators.