Product Name Balcony Solar Water Heater Model YYJ-B01 Circulation Type Indirect / Closed loop (Active) Heating System Passive Connection Type Direct-Plug Recommend region North America, European countries Tank capacity 100L-400L - See more at: http://www.ejaisolar.com/productsd.php?pid=37&tid=2#sthash.O9yLV8of.dpuf