SINGLE SENSOR GAS ALARM - LPG WG100-L Ocean Safety offer a complete range of gas alarm systems, these systems use modern technology to provide unrivalled protection. The alarm system incorporates a unique waterproof sensor. A leak of LPG (LP Gas) can result from any number of situations such as split or perished flexible hoses, chaffing pipes, leaking joints, poorly installed appliances, cracked cylinder lockers, loose cylinder regulators or unlit burners. Being heavier than air, LPG will sink and collect in the bilge or any available compartment.