Nereus Alarms manufacture and sell a range of high-quality gas alarms (gas detectors) for boats, RIBs and small craft. Proven in use for over 10 years, these products offer outstanding reliability and protect from the dangers of, LPG (butane/propane), Petrol Vapour and Carbon Monoxide. These professional alarms are widely used by boat builders, charterers, small vessel coders (MCA), gas fitters, marine engineers, boat & RIB owners, working boats and Government agencies around the world. Products range from single sensor alarms to multi-sensor gas control systems.