... with both isolation and surge protection, enclosed terminal blocks for tamper resistance and DIP switches ... the converter. If high handshake lines aren't available, Model485P is recommended. The RS-422 ... 485 signalD+, D-, GNDRS-422 signalR+, R-, T+, T-, GNDWorking formatAsynchronism, point to point or multi-point, ... 422 side DB-9 male or 5 terminal block or RJ45Environment Working temperature-20 to 60 ...