Kidde-Fenwal DH-2000 70-403001-152 Fire Alarm Duct Smoke Detector - This specialized detection unit provides reliable smoke monitoring within HVAC ductwork to prevent the spread of fire and combustion products throughout a ventilation system. - 24V Operating Voltage - 0.5% to 4% per foot obscuration range - 100 to 4000 FPM air velocity rating - 32°F to 140°F operating temperature range - 2-wire or 4-wire compatibility

Engineered for high-performance safety, this detector represents a significant advancement over legacy duct smoke sensing technologies by offering more stable air-sampling capabilities. While older models often required more frequent calibration and were susceptible to false alarms from dust accumulation, the DH-2000 series utilizes refined sensing chambers that maintain consistent sensitivity across diverse environmental conditions.

Advanced Detection Intelligence and Operational Stability

The DH-2000 utilizes sophisticated photoelectric sensing technology to detect smoke particles in high-velocity airflow applications, ensuring an immediate response to developing fire hazards. Its durable housing is specifically designed for ease of installation, allowing for quick access to test points and status indicators without requiring disassembly of the ductwork. By integrating this unit into your fire alarm infrastructure, you ensure superior monitoring performance that exceeds standard industrial safety requirements for HVAC protection.