Thermosiphon solar water heater systems can operated completely automatic if connect with intelligent controller. Simple structure, easy plug-in installation, can be installed both on flat and inclined roof, and can be used with an auxiliary electric booster as to provide tot water without sunshine. Superior heat preservation ensured by one-off molding polyurethane foam Suitable for residences. Stable and reliable performance, well wind resistance. Meet the mankind healthy bath standard: The material of inner tank is SUS304-2B stainless steel plate; the silica gel ring sealing has a long life against the erosion and it’s not harmful to health. · Capacity supply 200 ltr & 300 ltr