... the-line converters with both isolation and surge protection, enclosed terminal blocks for tamper resistance and DIP switches for configuration. Isolated ... ) to power the converter. If high handshake lines aren't available, Model485P is recommended. The RS-422/485 side is ... , RX, GNDRS-485 signalD+, D-, GNDRS-422 signalR+, R-, T+, T-, GNDWorking formatAsynchronism, point to point or multi-point, 2 line ...