Adopting FT232RNL chip solution, high-speed communication is stable, reliable and has good compatibility Onboard integrated power isolation provides stable isolation voltage and no additional power supply is required at the isolation end. Onboard integrated digital isolation, capable of signal isolation, high reliability, strong anti-interference, and low power consumption Onboard (transient voltage suppressor), which can effectively suppress surge voltages and transient voltages in the circuit, and protect against -Pattern and static electricity On-board self-restoring fuses and protection diodes stable current and voltage output, prevent overcurrent and overvoltage, and improve impact resistance. There is an external LED indicator light for easy viewing of power supply and signal transceiver status. Built-in RS485 output terminal 120R resistor, can be enabled through jumper cap, flexible switching Due to different batches, the appearance, color and printed words of the product , which not affect the use Material: plastic colour: Black Package Contents: 1 x Converter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.