{"id":8934239469721,"title":"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","handle":"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","description":"\u003ch3\u003eUSB 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\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eUSB to 4-channel RS485 module with metal case and rail is a serial\ncommunication module designed for industrial control scenarios.The USB signal\ncan be converted into 4 balanced differential RS485 signals with a stable\ntransmission rate. The reliable transmission rate is ≤3Mdopt original chip\nCH344Q, SP485, 480Mbps high-speed USB interface communication, reliable, good\ncompatibility.Adopt USB-B interface and 5.08mm terminals, smooth plugging and\nunplugging, sturdy and reliable.With independent power isolation and signal\nisolation circuit.USB terminal with electrostatic ESD protection circuit,\neffective prevention of electrostatic damage, to protect the rear circuit and\nequipment.RS485 terminal with over-current protection, surge protection,\nlightning gas discharge protection circuit.On-board 120R termination resistor\nselector toggle switch, which can increase the stability of signal\ntransmission and reduce interference.Baud rate support range: up to 3Mbps (In\nactual application, the baud rate supported by this module is limited by the\nbaud rate supported by the access devices at both ends, which needs to be\nadjusted according to the actual situation.)There are 4 kinds of LED\nindicators on board, which are used to indicate the sending and receiving\nstatus of the circuit signals.Red LED: Power indicatorYellow LED: ACT pin\nindicator, used to indicate the status of USB configuration completionGreen\nLED: 4-channel 485 signal transmission indicator, data flow direction:\nUSB-\u0026gt;485 . Blue LED: 4-way 485 signal receiving LED, data flow:\n485-\u0026gt;USB.Aluminum alloy shell, oxidized and frosted treatment, precise\nopening, solid and durable, exquisite workmanship.\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003e[Quality Concept] Oxidized frosted aluminum alloy shell Adopts CH344Q, SP485 chipset, 480Mbps high-speed USB interface, support 3M baud rate 485 signals\u003c\/li\u003e\n \u003cli\u003e[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.\u003c\/li\u003e\n \u003cli\u003e[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\u003c\/li\u003e\n \u003cli\u003e[Interface Protection] Static ESD protection circuit on USB side, overcurrent protection, surge protection and lightning gas discharge protection circuit on RS485 side.\u003c\/li\u003e\n \u003cli\u003e[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.\u003c\/li\u003e\n \u003c\/ul\u003e","published_at":"2026-08-27T00:06:34+10:00","created_at":"2026-08-26T16:13:04+10:00","vendor":"diustou","type":"Serial Adapters","tags":["electronics_selected_Aug2026"],"price":31900,"price_min":31900,"price_max":31900,"available":false,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":48936794751129,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"B0DZ1QT5SH","requires_shipping":true,"taxable":true,"featured_image":null,"available":false,"name":"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","public_title":null,"options":["Default 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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\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eUSB to 4-channel RS485 module with metal case and rail is a serial\ncommunication module designed for industrial control scenarios.The USB signal\ncan be converted into 4 balanced differential RS485 signals with a stable\ntransmission rate. The reliable transmission rate is ≤3Mdopt original chip\nCH344Q, SP485, 480Mbps high-speed USB interface communication, reliable, good\ncompatibility.Adopt USB-B interface and 5.08mm terminals, smooth plugging and\nunplugging, sturdy and reliable.With independent power isolation and signal\nisolation circuit.USB terminal with electrostatic ESD protection circuit,\neffective prevention of electrostatic damage, to protect the rear circuit and\nequipment.RS485 terminal with over-current protection, surge protection,\nlightning gas discharge protection circuit.On-board 120R termination resistor\nselector toggle switch, which can increase the stability of signal\ntransmission and reduce interference.Baud rate support range: up to 3Mbps (In\nactual application, the baud rate supported by this module is limited by the\nbaud rate supported by the access devices at both ends, which needs to be\nadjusted according to the actual situation.)There are 4 kinds of LED\nindicators on board, which are used to indicate the sending and receiving\nstatus of the circuit signals.Red LED: Power indicatorYellow LED: ACT pin\nindicator, used to indicate the status of USB configuration completionGreen\nLED: 4-channel 485 signal transmission indicator, data flow direction:\nUSB-\u0026gt;485 . Blue LED: 4-way 485 signal receiving LED, data flow:\n485-\u0026gt;USB.Aluminum alloy shell, oxidized and frosted treatment, precise\nopening, solid and durable, exquisite workmanship.\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003e[Quality Concept] Oxidized frosted aluminum alloy shell Adopts CH344Q, SP485 chipset, 480Mbps high-speed USB interface, support 3M baud rate 485 signals\u003c\/li\u003e\n \u003cli\u003e[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.\u003c\/li\u003e\n \u003cli\u003e[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\u003c\/li\u003e\n \u003cli\u003e[Interface Protection] Static ESD protection circuit on USB side, overcurrent protection, surge protection and lightning gas discharge protection circuit on RS485 side.\u003c\/li\u003e\n \u003cli\u003e[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.\u003c\/li\u003e\n \u003c\/ul\u003e"}