1. USB adopts original FT232RL, high-speed communication is stable, reliable and good compatibility. On-board overvoltage and overcurrent protection circuits (there is no protection between the two power supplies on the host side)2. The on-board integrated power isolation can provide a stable isolation voltage, and the isolation terminal does not need additional power supply3. On-board integrated digital isolation, can perform signal isolation, high reliability, strong anti-interference, low power consumption. The on-board TvS (transient voltage suppression tube) can effectively suppress the surge voltage and transient voltage in the circuit, and protect against thunder and static electricity.4. On-board resettable fuse and protection diode can ensure stable output of current and voltage, prevent overcurrent and overvoltage, and improve impact resistance5. On-board TTL serial port 3.3V and 5V level conversion circuit, the user can switch the B-side TTL communication level through the switch. Aluminum alloy shell, the surface is treated with oxidative frosting, which is firm and durableSpecification:Product Type: Industrial Grade Isolated Multi-Protocol ConverterCommunication rate: 300~921600bps (Note: RS232 to RS232 is 300-600000USB interface:Working level: 5VInterface form: USB-B type interfaceInterface protection: 200mA self-recovery fuse, isolated outputRS232 interface:Interface form: DB9 maleInterface protection: TVS tube protection, surge and electrostatic protectionTransmission mode: point-to-pointTTL (UART) interface:Working level: 5VInterface form: terminal blockInterface pins: TXD, RXD, GND, 5VInterface protection: provide clamping protection diodes, anti-overvoltage negative pressure, anti-shock interferenceMaterial: ABS+Metalcolour: blackPackage Contents:1 x Converter host1 x USB cable (about 1.2 meters)Only the above package content, other products are not included.Note: Light 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.