Ridgeyard 8L 2GPM LPG Propane Gas Tankless Instant Hot Water Heater Boiler Burner with Shower Head Indoor Home Bathroom Supplies Hot Water Output (T=25):8 L/min, Automatic electric ignition powered by 2 qualified D batteries Over heat Protection:Over 75 C will automatically turn off Suitble Water Pressure:Min.0.02MPa.Max.0.8MPa, Starting Pressure: 0.015MPa High efficient energy saving Low water-pressure startup