DUAL SENSOR ALARM – LPG X2 AND VALVE WG200 -LL-V 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. As an additional safety feature, the push button on the control panel is used to control an electrically operated gas shut-off valve (solenoid valve), which in the event of a gas alarm will automatically close and cut off the flow of gas and prevent a dangerous build up. Please note that solenoid valves are not supplied as part of the Gas Control Systems and need to be purchased separately