... 4,workv voltage:110V,220V,240V 1,floor heating cable,such as under ceramic tile2,warranty:50 years3,certificate: ... ISO,CE ROHS4,workv voltage:110V,220V,240V Cable conductor1 conductorRated voltage110V,220V.240VOutput power18.5W/MConductor insulationcross ... heating elements can serve for over 50 yearsit uses XLPE insulation layer which can resist high pressure,high temperature, ...