An Oxygen Depletion Sensor (O.D.S) detects when oxygen levels in the room fall below a specified level and cause the pilot flame to lift away from the sensing probe. This activates the Flame Supervision Device (F.S.D), which cuts off the gas supply inside the valve and renders the appliance safe. NB: Must only be installed by a Gas Safe Registered Installer, for further details to locate an installer please go to www.gassaferegister.co.uk This is compatible with the following LPG models: All Multiflue & Full Depth Models 16" Santino Plus 16" Taper Inset 18" High Tech 20" 2030 2040 3010 3020 3021 3070 Adams Radiant Adeva Ashleigh High Tech Ashleigh Plus C3000 C4000 C5000 C6000 C7000 C8000 CK Afina Multiflue CK Afina Slimline Designer DGF01 Elysee Excelsior Slimline FF110 FF220 FF250 FF330 FF440 FF350 Focus Convectaflame Focus Selectaflame Kensington Manila Oregon Polaris Porto Pureglow Slimline Radiant Reality Supa 400 Supa 500 Vogue Vorlan White Stone Effect Winther Browne Radiant |