FDL5 11-65 is a waterproof fixed temperature heat detector manufactured by NOHMI BOSAI, specially designed for humid, splash-prone marine and industrial environments. It operates at a fixed temperature threshold and outputs contact signal for fire alarm panels FAC511B and FAC512. The internal circuit board is fully sealed with glue to achieve reliable waterproof performance against high humidity and water splashes on vessels. Equipped with pre-wired red and blue cables for quick field wiring, it holds NK marine type approval No. N-429, widely installed in ship engine rooms, pump rooms, laundry and other high-temperature, wet areas to provide temperature rise fire detection.
