1INDUSTRIAL GRADE ISOLATED CONVERTER: USB to RS232 485 422 TTL converter supports a variety of communicate interface conversion, USB to RS232, USB to RS485, USB to RS422, USB to TTL. it is an industrial grade isolation converter, with built in power supply isolation, ADI magnetic isolation, TVS and other defend circuits, and aluminum alloy shell design. 2EASY TO OPERATE: Industrial isolation adapter is easy to operate, with 0 delay automatic transmission and reception conversion function. It can be applied to various industrial control equipment or applications with high communicate requirements, fast communicate speed, stable and reliable, good compatibility. 3STABLE ISOLATION VOLTAGE: On board integrated power isolation, providing stable isolation voltage, isolated end without additional power supply. On board integrated digital isolation, which can realize signal isolation, high reliability, strong anti interference, low power consumption, and 4MULTI DEFEND: On board TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, anti thunder, ESD defend. On board self recovery fuses and defend diodes to ensure stable current/voltage output, provide over current/over voltage defend and improve shock resistance. 5MULTI SYSTEM SUPPORT: Support for Linux, for Android, for Windows 11 / 10 / 8.1 / 8 / 7, etc. On board TTL serial 3.3V/5V voltage converter, TTL levels configurable via switches. 3 LEDs for power and transceiver status indication. Industrial grade metal housing, support wall mount and rail mount, sturdy and beautiful, easy to install.