This Gas Water Heater has an automatic operation system so once installed and connected to the water and gas supply, turning on the hot water tap will automatically produce hot water. When the tap is turned off, the flame will automatically extinguish. Independent control of water flow and gas flow makes it easy to adjust the water temperature. Its innovative design and sleek shape make it convenient to install. This Gas Water Heaters advanced energy-saving combustion technology greatly enhances burning efficiency. It ignites at low water pressure (0.03Mpa or 0.3Bar or 3m water head), fulfills the needs of consumers in rural areas with low water pressure. Its complete safety functions include: Sensitive IC flame sensor that will cut off the gas supply if the flame goes out unexpectedly, insufficient water flow pressure protection – In the case of water supply being cut off, the gas valve will automatically turn off.