[Chip solution]：FT2232HL

[Operating voltage]： DC 4.5~5.5V

[Product size]：100*54*32mm

[Introduction]：The E810-U21 is an industrial-grade bidirectional USB to RS485 converter module. The shell adopts a three-proof coating, including anti-fungal, anti-humidity, and anti-salt spray. An external USB interface can be connected to two independent RS485 interfaces without affecting each other. It is suitable for scenarios where the computer is connected to multiple RS485 networks simultaneously. Built-in RS485 automatic transceiver switching circuit, independent pin control switching, makes RS485 communication more reliable and can connect more devices at the same time. It can convert single-ended USB signals to RS-485 signals without external power supply, and each interface provides surge protection.