555 Timer PRO is like a sort of manual that includes a number of wizards and explanations for electricians. It divides the information by category, so it can be easily searched. Some of the items will appear as unavailable until you register the program, but there are many items that can be read. Some of the items include pins, bypassing, component selection, pulse width and position modulation, triggering a monostable, varying pulse width, input and output elements like switch, touchplate, light, etc, resistors, and capacitors, to name but a few. Some of the items only include comprehensive explanations of what they are or how to use them, while others also include smart graphics that can be printed to take them wherever you go. All the information can be saved as a word or PDF document in case you want to print or edit it. You can also add the items to a project, meaning that they will appear in the main window, so that you can easily access them in seconds without having to look for them on the menu.
In short, 555 Timer PRO is a wonderful tool for electricians or future electricians that includes all the information needed to start making their own projects or check data that they may have forgotten or look for project they have never done.