The proprietary %2DID command reads the 2DID of the nRF91x1System in Package (SiP). The 2DID corresponds to the two-dimensional barcode etched on
top of the module.v2.0.x
Set command
The set command reads the 2DID (SERIAL_NUMBER_A) of the nRF91x1SiP. If the 2DID has not been written to the device, the response is an empty string.