1、Intelligent RS485 bus control, zero delay transceiver conversion circuit, support automatic induction of data direction and flow control 2、Intelligent baud rate control, adopt industrial FT232 chip, support baud rate settings 3、Transient suppression, signal interface provides 600W thunder surge protection and additional limiting protection, preventing module damage caused by error wiring 4、The USB port is isolated from four RS485 to provide 5kV full isolation protection. Meet industrial control, building complex wiring requirements 5、Easy to use and assemble, only USB lines can work without external power supplies. External 5V auxiliary power is only required when a large amount of external load or low power supply is insufficient 6、Industry standard rail installation with bolt terminal, convenient for product wiring, maintenance and transformation 1 x Hub1 x USB Cable Interface1 x User Manual Item Type: USB to RS-485 ConverterMaterial: ABSModel: YN-861Interface Features: Compatible with EA / TIA RS-485 standardElectrical Interface: RS-485 bolt terminalInterface Protection: RS-485 600W thunder surge protection and overcurrent protectionTransmission Medium: Twisted pair or shield twisted pairNumber of Nodes: Up to 256Terminal Resistance: External connectionTransmission Rate: 300bps - 115.2kbpsPower Consumption: 1W at DC5V (USB power)Isolation Performance: 1.5kV isolation between four channels and USBTransmission Distance: 1200meter (4000ft) at 19.2kbps. The actual situation is affected by the wiring method, the number of nodes, and the transmission rateStatus Indicators: Onboard transceiver indicator real-time displayWorking Temperature: -20℃ ~ 65℃Work Humidity: 25% ~ 85% (no condensation)