Features 1、INDUSTRIAL 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. 2、EASY 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. 3、STABLE 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 4、MULTI 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. 5、MULTI 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. Specification Item Type: USB to RS232 485 422 TTL Converter Material: Aluminum Alloy USB: Connector: USB B Defend: 200mA Self Recovery Fuse, Isolated Output RS232: Connector: DB9 Male Defend: TVS Diode, Surge Defend and ESD Defend Transmission Method: Point to Point Baud Rate: 300bps to 3Mbps RS485/422: Connector: Screw Terminal Direction Control: Hardware Automatic Control Defend: 600W Anti Thunder Surge Defend, 15KV ESD Defend(two 120R Balancing Resistors Reserved, Enabled/Disabled via Jumper) Transmission Mode: Point to Multipoint (485 Mode: Up to 32 Nodes, Repeater Recommended for More Than 16 Nodes; 422 Mode: Up to 256 Nodes, Repeater Recommended for More Than 16 Nodes) Baud Rate: 300bps to 3Mbps TTL (UART) Connector: Screw Terminal Pinout: TXD, RXD, GND, 5V/3.3V Transmission Method: Point to Point Baud Rate: 300bps to 3Mbps Indicator: TXD: TX Indicator, Lit When the USB Port Sends Data RXD: RX Indicator, Lit When the Device Port Sends Back Data Support: Support Multi Device and Multi System for Android, for Linux, for Windows 11/10/8.1/8/7, etc. Package List 1 x USB to RS232 485 422 TTL Converter 1 x USB Cable 1 x USB Flash Drive 1 x Screwdriver 1 x Wiring Terminal