Features: Brand new and high quality Supports USB to RS485 communication. Uses original FT232RL, high-speed communication is stable, reliable, and compatible. Built-in TVS transient voltage suppression tube; can effectively suppress surge voltage and transient spike voltage in the circuit, lightning protection and anti-static. Built-in self-resetting fuse and protection diode ensures stable current and voltage output, prevents overcurrent and overvoltage, and improves impact resistance. External 3 LED indicators for easy viewing of power and signal transmission and reception status. Specifications: Style: CH343G version, FT232RL version (optional) Communication rate: 300-921600ps, Host interface: USB Device interface: RS485 USB interface: Working level: 5V Interface form: USB-A type interface Interface protection: 200mA self-resetting fuse, ESD static protection. Transmission distance: about 5 meters RS485 interface: Interface form: terminal block Interface pin: A+, B-, GND Direction control: hardware automatically determines and controls the data transmission direction Interface protection: Provides 600W lightning protection, surge protection and 15KV static protection (onboard 120R balance resistor). Transmission distance: about 1200 meters (at low speed) Transmission mode: up to 32 nodes in point pairs, more than 16 nodes are recommended to add repeaters), Indicator light: PWR: Power, connected to USB, red light when voltage is detected. TXD: Transmit indicator light, when data is sent from the USB port, it lights up red. RXD: Receive indicator light, when data is sent back from the device interface, it lights up red. Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x USB to RS485 Converter