Sefind designs and manufactures systems for monitoring 400Hz control units and converters. An example is the system created for “Leonardo da Vinci” airport of Rome Fiumicino, where the 400Hz central room and the relative converters of 3 terminals were monitored.

Sefind also provides monitoring and supervision systems for all the other apron equipments: in this way systems are always under control and maintenance is facilitated in troubleshooting.