Good day. Thank you for your question.
There is no specific alcohol sensor manufacturer that can be recommended as we have not tested it. However, if you can provide us all the documentation about that sensor then we can evaluate it and advise you if it is supported or additional implementation has to be done. Our BLE functionality allows our devices to configure custom sensors to work with our devices, provided those BLE sensors advertise data packets that can be captured, saved, and sent to the server where they can be parsed. Also, we do have Mercury C4 Breathanalyzer protocols implemented but it is only available on FMC125/FMB125/FMM125/FMU125 since it is connected via RS232.