The NAPCO FW-4-H-E is a 4-wire photoelectric smoke detector that provides advanced fire detection capabilities with the added convenience of two bi-colored LEDs for easy status indication. This smoke detector is designed to enhance safety and security in a wide range of environments.

Key Features:

• Comprehensive Fire Detection: The FW-4-H-E is equipped to detect various types of fires effectively. It provides reliable protection against fire hazards, including paper, wood, gasoline, and smoldering fires.

• Visual Status Indication: The detector's two bi-colored LEDs continuously monitor its status. In a normal standby condition, the LEDs flash green every 3 seconds. If the detector senses a deviation from the UL Listed sensitivity window, the LEDs flash red every 3 seconds. During an alarm, the status LEDs remain lit in red, providing clear visual feedback.

• Sensitivity Verification: The detector includes an automatic sensitivity window verification function, ensuring compliance with the outlined requirements in NFPA 72, Chapter 7 for inspection, testing, and maintenance.