Features 1、FOR CH344L CHIP: Using the original for CH344L chip, high speed telecommunication is stable, reliable, high compatibility; can be extended via USB 4 way isolated RS485 interface, convenient for users to expand access to multiple RS485 industrial serial devices. 2、POWER ISOLATION: Onboard integrated power isolation can provide stable isolation voltage, isolated end without additional power supply; onboard integrated digital isolation, signal isolation, high reliability, strong anti interference, low power consumption. 3、HIGH SAFETY: Onboard TVS (transient voltage suppressor), can effectively suppress the surge voltage and transient spike voltage in the circuit, lightning and static electricity; on board self recovery fuse and guard diode, can ensure stable current and voltage output, prevent overcurrent and overvoltage, improve shock resistance. 4、EASY TO OPERATE: Built in RS485 output terminal 120R resistor, can be enabled by a dip switch, switching flexibility; external 10 LED indicators, easy to view the power supply, device configuration status and signal transceiver status. 5、EASY TO INSTALL: USB to 4 way RS485 converter adopts industrial grade aluminum alloy shell, support wall and rail mounting two kinds of installation, sturdy and beautiful, easy to install. Specification Item Type: USB to RS485 Converter Material: Aluminium Alloy Host Interface: USB Device Interface: for RS485 Telecommunication Range: 1200bps ~ 460800bps USB Interface: Operating Level: 5V Interface Type: USB B Type Interface Guard: 500mA Self Resetting Fuse, Isolated Output RS485 Interface: Interface Type: Wiring Terminals Direction Control: Hardware Automatically Determines and Controls the Direction of Data Transmission. Interface Guard: 600W Lightning, Surge and 15KV Electrostatic guard (Onboard 120R Balancing Resistor) Transmission Mode: Point to Multiple (up to 32 Nodes, Repeaters Are Recommended for More Than 16 Nodes) Indicator: PWR: Power Indicator, Red Lighting When Voltage Is Detected When Connected To USB ACT Status Indicator, Green Light When Drive Is Detected. RXD Receive Indicator, Lights up When There Is Data Sent Back from the Corresponding Port. TXD Transmit Indicator, Lights up When There Is Data Sent from the Corresponding Port. Operating Environment: Temperature Range: -40℃ ~ 85℃ Humidity Range: 5% ~ 95%RH Operating System: for OS X, for Linux, for Android, for Windows 11 10 8.1 8 7 Package List 1 x USB to RS485 Converter 1 x Screwdriver 1 x Buckle 1 x USB Cable