This tester is manufactured by GenaAlfa and sold as is without return possibility.
The SAS angle sensor is NOT included in this lot, only Tester.
The tester is intended for professionals. Do not buy it if you are not sure what you need.
SAS Tester have its own display as well as PC software.
PC software is used for comlex watching with big digits and more data.
PC software have PopUps with SAS schematic fragments (see example photo).
Also you can update the tester firmware, if its will be released, in PC System tab.
Each byer receive linc to RUSSIAN video instruction.
There is Operation Description, Hints, SAS Repair methode, SAS Assembly/Disassembly.