Abstract: A water outlet device includes a housing member, a temperature detecting device having a receptacle attached to the outlet portion of the housing member, a sensor disposed in the receptacle for detecting a temperature of the water flowing through the receptacle, and an indicating device attached to the housing members and coupled to the sensor for indicating the water temperature and for preventing the users from being scaled by the hot water. One or more solar cells or an energizing device may be powered by water or manually and may be used for energizing the indicating device or the sensor without the typical batteries that will pollute our environment.