Features USB to RS485 communication Adopt original FT232RL, fast communicating, stable and reliable, better compatibility Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightning-proof & anti-electrostatic 3 LEDs for indicating the power and transceiver status Specifications Product type: industrial converter Baudrate: 300-921600bps Host port: USB Device port: RS485 1) USB Operating voltage: 5V Connector: USB-A Protection: 200mA self-recovery fuse, ESD protection Transmission distance: about 5m 2) RS485 Connector: screw terminal Pins: A+, B-, GND Direction control: hardware automatic control Protection: 600W lightning-proof and surge-suppress, 15KV ESD protection (onboard 120R balancing resistor) Transmission distance: about 1200m (low rate) Transmission mode: point-to-multipoints (up to 32 nodes, it is recommended to use repeaters for 16 nodes or more) 3) LED indicators PWR: red power indicator, light up when there is USB connection and voltage is detected TXD: red TX indicator, light up when the USB port sends data RXD: red RX indicator, light up when the device ports send data back 4) Operating environment: Temperature: -15? ~ 70? Humidity: 5%RH ~ 95%RH Operating system: Mac, Linux, Android, WinCE, Windows 10 / 8.1 / 8 / 7 / XP User guide/Driver installation/Development Resourcesbit.ly/3H9CVqY PACKAGE CONTENT 1.USB TO RS485 x1 2.USB-A male to female cable x1 3.Screwdriver x1 FAQ Question:What should I do if the RS485 short-range communication is abnormal? Answer: Remove the 120 ohm termination matching resistor from RS485.