Waveshare Industrial Isolated USB to 4-Ch RS485 Converter (B), CH344L Chip, Multi Protection Circuits, Multi Systems Support, Aluminium Alloy Case, Wall-Mount & Rail-Mount Support

Adopts original CH344L chip, fast communicating, stable and reliable, better compatibility. Supports USB to 4-ch isolated RS485, convenient for expanding multiple RS485 industrial serial devices

Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal. Onboard unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption. Onboard RS485 output terminal 120R resistors, enabled/disabled via DIP switch

Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & ESD protection

Onboard self-recovery fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock proof performance

10 LEDs for indicating the power, device configuration status and transceiver status. Industrial grade metal case, supports wall-mount & rail-mount installation, solid and beautiful, easy to install