The inclination angle sensor consists of two modules. One of them is fixed on the surface relative to which the deflection angle must be measured, and the other on the moving part. These can be the hatch of the tank and the box of the cranes of the gas truck to record the time and place of their opening, the boom of the crane - to determine the scope of the work performed, elements of the attached / trailer equipment of the tractor - to determine the fact of the work being performed. The sensor stores an ID code to identify the attachment/trailer. It is connected to the on-board controller via the RS-485 digital interface.