BAXI - Technical Guide is an Android application designed for those who work on the installation, maintenance, and repair of BAXI equipment. The app is a useful tool for those who are on the go as it provides offline access to information about BAXI boilers. It includes several sections, such as "Error Codes," which describes error codes, the element responsible for the error, and the possible causes of the error. The section works offline without an internet connection. Another section is "Parameter Settings," which describes the necessary settings for the boiler and also works offline. The "Info Parameters" section contains descriptions of non-changeable parameters, such as ionization current and outdoor temperature. The app also provides the ability to download and view manuals and drawings in the "Library of Instructions" and "Drawings" sections, respectively. Lastly, the "BAXI on the Map" section shows the location of BAXI stores and service organizations. Overall, BAXI - Technical Guide is an excellent resource for anyone dealing with BAXI equipment.