Features: 1.600W Surge Protection: Industrial isolated adapter on board 15 KV ESD isolation protection and 600W thunder surge protection, which can effectively suppress the surge voltage and transient spike voltage in the circuit, thunder protection and anti static. 2.Isolated Voltage: Adapter on board integrated power isolation, can provide stable isolation voltage, isolated side without additional power supply, ABS environmental protection outside the bright, compact size, easy to install. 3.Signal Isolation: Converter on board integrated digital isolation, can be signal isolation, high reliability, strong anti interference, low power consumption on board TS (transient voltage suppression tube). 4.Stable Output: On board self recovery fuses and protection diodes to ensure stable current and voltage output, prevent over current and over voltage, and improve the ability to resist hit. 5.3 LED Indicators: RS485RS422 interface 120R final resistor, the default enable, can be modified through the jumper hat settings. External 3 LED indicators, easy to view power and signal transmission status. specification:Item Type: USB to RS485 Industrial Isolated Converter Material: ABS Communication Rate: FT232RNL 300bps to 3Mbps Host Interface: USB Device Interface: RS485/422 USB Interface: Operating Level: 5V Interface Form: USB B Type Interface Interface Protection: 200mA Self Recovery Fuse, ESD Static Protection Transmission Distance: Approx. 5meter / 16.4ft Interface Type: Wiring Terminal Interface Pins: A+, B-, PE RS485/422: Direction Control: Hardware Automatically Discriminates and Controls Data Transmission Direction Interface Protection: Provide 600W Thunder, Surge and 15K Electrostatic Protection (120R Balance Resistor on Board) Transmission Distance: Approx. 1200meter / 3937.0ft (At Low Rates) Transmission Mode: Point to Multiple (up to 32 Nodes, More Than 16 Nodes Are Recommended to Add Repeaters) Operating System: For OS X, for Linux, for Android, for WnCE, for Windows10 8.1 8 7 XP PackageList: 1 x Converter 1 x Screwdriver 1 x Connection Cable