This RS232 to TTL converter supports all RS232 interface signals (RXD, TXD, DTR, DSR, RTS, CTS, DCD, RI) and is configured to correspond with DTE/Host devices, where TXD is the RS232 output and RXD is the RS232 input. It operates with a TTL-side voltage of 3…5.5 V, featuring a standard DB9 connector and a Phoenix MC 3.81 connector for custom cabling needs.