With the GfA stick, the GfA controls (types: TS959, TS970 and TS971) can be easily read via a Bluetooth 4.0 connection. The following data can be read with the GfA stick: - general data: serial number, software version and temperature in the control - Drive data: serial number, type and article number - Programmed settings such as operating mode, automatic closing, etc. - Last six error messages with recommendations for possible solutions via the error guide - Last 128 actions such as open / close controls, stop, etc. - Last adjustment in the menu for reset to factory settings