USB to 4-Channel 485 Serial Module CH344Q SP3485 Chip 480Mbps USB Interface Supports 485 Communication at 3M baud Rate Metal case with Isolation Multiple Protection

[Quality Concept] Oxidized frosted aluminum alloy shell Adopts CH344Q, SP485 chipset, 480Mbps high-speed USB interface, support 3M baud rate 485 signals
[Easy to use] Support USB to 4-way RS485 signals, behind the 3.5mm universal rail, both sides have fixed holes, easy to install, solid and durable.
[On-board Resources] Independent power isolation and signal isolation circuits, 120R termination resistor for 485 communication with selectable dip switches, 4 colors of LED indicators
[Interface Protection] Static ESD protection circuit on USB side, overcurrent protection, surge protection and lightning gas discharge protection circuit on RS485 side.
[Interface Parameters] USB-B interface and 5.08mm terminals, smooth plugging and unplugging, sturdy and reliable, complimentary terminals and data lines for easy wiring, USB power supply is required.