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

USB to 4-channel RS485 module with metal case and rail is a serial communication module designed for industrial control scenarios.The USB signal can be converted into 4 balanced differential RS485 signals with a stable transmission rate. The reliable transmission rate is ≤3Mdopt original chip CH344Q, SP485, 480Mbps high-speed USB interface communication, reliable, good compatibility.Adopt USB-B interface and 5.08mm terminals, smooth plugging and unplugging, sturdy and reliable.With independent power isolation and signal isolation circuit.USB terminal with electrostatic ESD protection circuit, effective prevention of electrostatic damage, to protect the rear circuit and equipment.RS485 terminal with over-current protection, surge protection, lightning gas discharge protection circuit.On-board 120R termination resistor selector toggle switch, which can increase the stability of signal transmission and reduce interference.Baud rate support range: up to 3Mbps (In actual application, the baud rate supported by this module is limited by the baud rate supported by the access devices at both ends, which needs to be adjusted according to the actual situation.)There are 4 kinds of LED indicators on board, which are used to indicate the sending and receiving status of the circuit signals.Red LED: Power indicatorYellow LED: ACT pin indicator, used to indicate the status of USB configuration completionGreen LED: 4-channel 485 signal transmission indicator, data flow direction: USB->485 . Blue LED: 4-way 485 signal receiving LED, data flow: 485->USB.Aluminum alloy shell, oxidized and frosted treatment, precise opening, solid and durable, exquisite workmanship.

• [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.