Product RangeInterface Converters RS232 to RS485 Converters w Truly 3 way Isolated w 3KV Opto Isolation, 3 KV Galvanic Isolation, 15 KV ESD protection w 4 KV Surge & 4 KV EFT protection w 230V AC, 24 / 48 / 110 / 220V DC operated w DIN rail mounted