Waveshare Industrial USB to 4Ch RS485 Converter Module (B) with CH344L Chip,Universal Serial Communication,Multiple Protection Circuits,Compatible Mac, Linux, Android, Windows 11/10 / 8.1/8 7

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 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 Onboard RS485 output terminal 120R resistors, enabled/disabled via DIP switch 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