I created this website with educational purpose only;
note that DIY devices are forbidden by the safety regulations of some countries.
By copying anything from this site you agree to the "as is" nature of the information. No warranty or liability is expressed or implied.

Electric circuits may be dangerous and sometimes deadly: be careful! You will proceed at your own risk. I can not be found responsible for any errors or damages arising out of use of information avaliable on this site.
Step 7 and s7200 are trademark of Siemens Corporation.