Instantaneous gas water heater with a sealed cavity design: compatible with solar systems and easy to install. Intelligent zone thermostat: continuously adjusts the temperature to maintain a comfortable and constant level even when other areas of the home are using hot water simultaneously. New and advanced independent gas proportional regulator for more precise temperature control. Ultra-smooth electronic ignition this gas water heater uses automatic low-pressure electronic ignition, providing hot water even under low water pressure; minimum operating water pressure is 0.1 bar. Minimum power: 5 kW. Gas inlet: 1/2 inch. Hot and cold water inlets: 1/2 inch. Gas inlet diameter: 60/100 mm. Multi-functional LED display: an easy-to-use LED screen allows you to view the bathtub hot water temperature at any time and adjust it to your preference. Additionally, there is a chart displaying the water heater's operating status. Simple white panel design, elegant and stylish. Low NOx emissions: the burner has low emissions and high energy efficiency, ensuring safety and reliability. The oxygen-free copper antibacterial water tank is corrosion-resistant, leak-proof, has rapid heat conduction, high energy efficiency, and a long service life. Note: This product does not include the flue outlet required for installation. If you encounter any quality problems during use, you can contact us by phone, email or leave a message, and we will handle it in accordance with our warranty policy.