Description
NOHMI BOSAI LTD
TYPE: FMM557
MANUAL FIRE ALARM BASE
VOLT: DC 20V
CURRENT: 50MA
The Nohmi Bosai FMM557 is a manual fire alarm base for a ship’s fire alarm system. It forms the manual side of the installation, giving crew a fixed point from which a fire alarm can be raised by hand. The unit is rated at 20 V DC and 50 mA, and these figures should be checked against the existing panel and wiring before work begins. This FMM557 is offered in New Without Box condition and can be used for repair, refit or spares holdings on vessels where manual alarm points form part of the fire detection layout.
Key Features
✓ Manual fire alarm base
✓ Type FMM557
✓ Rated voltage 20 V DC
✓ Rated current 50 mA
✓ Made by Nohmi Bosai Ltd
Marine Applications
✓ Manual alarm points in accommodation corridors
✓ Engine room fire alarm stations
✓ Bridge and wheelhouse manual alarm points
✓ Cargo control room fire alarm stations
Technical Support
Prota Marine provides technical support, repair and onboard installation for the manual fire alarm base and the wider fire alarm system. Our engineers assist with fault diagnosis on manual alarm points and the circuits serving them, and give commissioning support once the base is fitted.




