Ridgeyard 12L 3.2GPM Digital Display LPG Propane Gas Tankless Instant Hot Water Heater Boiler Burner with Shower Head Indoor Home Bathroom Supplies Instant endless hot water; Hot water output (T=25):12 L/min (3.2GPM ) Over heat protection:Over 75 C will automatically turn off; Over water pressure protection Suitble gas pressure:LPG:2800Pa ;Stainless steel panel, LCD screen High efficient energy saving; Power supply by two sets of 1.5 V batteries. Low water-pressure startup Water pressure:Min.0.02MPa.Max.0.8MPa,Starting Pressure:0.025MPa