... centigrade),setting water level(50%-100%)4. Manual water, supply water of control temperature, auto-water after 15minutes without water auto-stop ... function after 30 minutes.8. Avoiding without water heater function (supply water level to 50% firstly ,then auto-startup ... Electric Heating Element , Mg Anode , T&PValve, Sensor,non-return valve FeaturesSpecial-protection inner tank with the quality ...