Features: Adopting the SP3232EEN+SP485EN chip solution, high-speed communication is stable, reliable, and compatible, stable transmission rates Reliable communication speed of 300-921600bps integrated power isolation, providing stable isolation voltage The isolation end does not require additional power supply. The integrated digital isolation can perform signal isolation, with high reliability, strong anti-interference ability, and low power consumption. The onboards TVS (transient voltage suppression tube) can effectively suppress surges voltage and transient voltage in the circuit, Board mounted self recovery fuses and protective diodesensure stable output of current and voltage, prevent overvoltage and improve impact resistance 120R terminal resistor for on-board 15KV isolation protections and 600W surges protections RS485/RS422 interfaces Supports a wide voltage of DC5~36V, with 3 external LED indicator lights for easy viewing of power and signal transmission status. The industrial rail type ABS environmentally friendly housing is compact, easy to install, and cost-effective Specifications: Item:RS232 to RS485/422 Module Material: Plastic Size:approx 10.05x5.4x3.2cm/3.96x2.13x1.26in Chips: SP3232EEN+SP485EN Connection Types:Male/Female Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! 4.No retail package Package includes: 1Set RS232 to RS485/422 Active Digital isolated Converter