Features: Adopting original FT232RNL chip solution, fast communication is stable, reliable, andcompatible Board mounted integrated power isolation, which can provide stable isolation voltages, and the isolation end doesnot require additional power supply. Board mounted integrated digital isolation Signal isolation, high reliability, strong anti-interference, low power consumption onboards transients voltages suppression tube), can effectively suppress surges voltages and transients highest voltages in the circuit protections and antistatic Board mounted self recovery fuses and protective ensure stable output of current and voltages, prevent overvoltage and improve impact resistance RS485 output terminals 120R resistors flexible switching, external LED indicator light for easy viewings of power and signal transmission status, industrial rail ABS environmentally friendly housing, easy installation, and high cost-effectiveness Specifications: Item:USB to RS232/485 Modular Chip:FT232RNL Size:approx 8.19x5.4x3.2cm/3.22x2.13x1.26in Note: Due to the problem of lighting effects and shootingangles, there is certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1Set USB to RS232/485 Modular