It's perfect for the home solar water heating systems or other circulation pump application. Brushless Motor,Super long working life,low consumption and low noise Power source: DC 12V Rated current: 0.7A Low noise: 30db at 1 metre Service life: 30000 hours up Inlet/Outlet: 1/2" male thead. Fit both 1/2" NPT and BSP female thead. We've tested. w/ two brass coupler Max Flow Rate: 8L/Min(2.1GPM) Max Water Head: 3 metre(9.8ft) Max system pressure: 10Bar(145PSI) Max circulating water temperature: 100°C/212°F. Can't be immersed in hot water exceeding 50°C/122℉ Item included: 1x bayite DC 12V Circulation Water Pump(NO POWER ADAPTER INCLUDED)