An LED night light with interchangeable display unit can be separated from the base when a predetermined force is applies to reduce the chance that the prong device will be damaged by pulling, pushing, or twisting. The display unit may have a built-in or separate input-end to accommodate a receptacle means of the base. An LED related circuit, prong means and other control device may be disposed in the base or incorporated with a sealed-unit to cause the light beam to be seen by a viewer through the display area and provide a dedicated artwork, design, motion liquid, and/or dimensional colored image for illumination.