Add to Cart Henrich HESC-T-042 Henrich MSRP: Now: $926.00 Was: Industrial RS-232 to RS-485/422 Converter with Optical Isolation, Active, Port Protection: RS-232 ±15KV ESD Protection, RS-422/485 Each Line 600W Surge, Isolation: Isolated Voltage 2,500VRMS 500VDC,... HESC-T-042