XCSOURCE 12V Solar Battery-Powered Hot Water Circulation Pump DC Black TE091 The pump is perfect for the family home thermal solar systems or any circulation pump application where conventionalpower is not available. Horizontal inlet and outlet with rotatable cap, easy installation. Max operating temperature up to 100 degree with External circulating water flow. Super long working life. Low consumption & low noise. Amphibious design.Submersible installation and entirely waterproof.