KH702U RS485/RS232 to USB converter module High Safety, isolated,University Sampling rate: 0. ... RS485 to RS232 isolated surge protection converter moduleKH702URS232/RS485 to USB isolated surge protection converter moduleGernal FeatureHigh SafetySafeguider built-in ... RX,GND-GNDRS-232 connectionTX-TX, RX-RX,GND-GNDRS-485 connection485A-485A, 485B-485B KH702U RS485/RS232 to USB Communication Converter