UTEK UT-2127 Port-powered RS-232 to RS-485/422 Mini-size PhotoElectric Isolation Standards: RS-232C/ RS-485/ RS-422 EIA/TIA  Connector: RS-232 DB9 female input RS-422/485 6 bits terminal block outpu Port protection: RS-232 15KV ESD protection; RS-422/485 600W surge protection  Isolation: 2,500Vrms isolated voltage, continuous 500VDC Working mode: asynchronous half-duplex or full-duplex  Transmission media: twisted-pair or shielded cable