{"product_id":"usb-to-rs485-rs232-converter-module-half-duplex-serial","title":"USB to RS485\/RS232 Converter Module | CH343G Half-Duplex","description":"\n\u003ch2\u003ediymore USB to RS485\/RS232 Bidirectional Communication Converter Module\u003c\/h2\u003e\n\u003cp\u003eUpgrade your serial communication setup with the \u003cstrong\u003ediymore Industrial-Grade USB to RS485\/RS232 Converter Module\u003c\/strong\u003e. Powered by the advanced \u003cstrong\u003eCH343G chip\u003c\/strong\u003e, this plug-and-play module lets you switch seamlessly between RS485 and RS232 protocols via a simple DIP switch — no soldering, no complicated configuration. Whether you're working on industrial automation, embedded systems, or DIY electronics, this compact module delivers reliable, high-speed data communication up to \u003cstrong\u003e1,000,000 bps\u003c\/strong\u003e. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Protocol Support:\u003c\/strong\u003e Switchable between RS485 and RS232 via on-board DIP switch for versatile deployment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCH343G Chip:\u003c\/strong\u003e Latest-generation chipset ensures true plug-and-play compatibility with Windows, macOS, and Linux — no driver hassle.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Communication Rate:\u003c\/strong\u003e Supports 50 bps to 1,000,000 bps to match any application's throughput needs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-In Surge \u0026amp; ESD Protection:\u003c\/strong\u003e On-board TVS (Transient Voltage Suppressor) provides 600W lightning protection, surge protection, and up to 15KV electrostatic protection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-Resetting Fuse \u0026amp; Protection Diode:\u003c\/strong\u003e 200mA resettable fuse and ESD protection diode safeguard both your module and connected devices from overcurrent\/overvoltage events.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3 LED Status Indicators:\u003c\/strong\u003e Dedicated PWR, TXD, and RXD LEDs give you instant visual feedback on power status and data transmission activity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtended RS485 Range:\u003c\/strong\u003e Transmit up to approximately 1,200 metres (RS485) or 10 metres (RS232) at low data rates.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Node Support:\u003c\/strong\u003e Point-to-multipoint RS485 topology supports up to 32 nodes (repeater recommended for 16+ nodes).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e120Ω Balancing Resistor:\u003c\/strong\u003e On-board termination resistor reduces signal reflections for clean, stable RS485 communication.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB Type-A Connector:\u003c\/strong\u003e Standard, universally compatible host interface operating at 5V.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ediymore\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCH343G\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHost Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUSB Type-A connector\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDevice Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ RS232 (DIP switch selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5V (USB bus-powered)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 bps – 1,000,000 bps\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRS485 Transmission Distance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~1,200 m (at low data rates)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRS232 Transmission Distance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~10 m (at low data rates)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUSB Interface Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200mA resettable fuse, ESD protection\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRS485\/RS232 Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e600W lightning, surge, 15KV ESD, 120Ω balancing resistor\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterface Pins\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGND, A+ (TXD), B− (RXD)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDirection Control\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHardware automatic detection \u0026amp; control\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmission Mode\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHalf-duplex (RS485 multi-drop up to 32 nodes; RS232 point-to-point)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOS Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWindows, macOS, Linux\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTQFP\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eLED Indicator Guide\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePWR:\u003c\/strong\u003e Illuminates when USB connection detects voltage — confirms the module is powered.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTXD:\u003c\/strong\u003e Flashes when data is being transmitted from the USB port.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRXD:\u003c\/strong\u003e Flashes when data is being received via the USB port.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInterface Pin Connections\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGND:\u003c\/strong\u003e Peripheral connection ground\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eA+ \/ TXD:\u003c\/strong\u003e RS485 Line A — or RS232 RXD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eB− \/ RXD:\u003c\/strong\u003e RS485 Line B — or RS232 TXD\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUSB to RS485\/RS232 Converter Module × 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cp\u003eLooking for more electronics and accessories? Check out the \u003ca href=\"\/products\/ancient-nutrition-multi-collagen-advanced-muscle-60-capsules\"\u003eAncient Nutrition Multi Collagen Advanced Muscle 60 Capsules\u003c\/a\u003e for your wellness needs, or explore our range of \u003ca href=\"\/products\/bu-29mm-sinking-minnow-jerkbait-fishing-lure-bass-trout-pike\"\u003eB\u0026amp;U 29mm Sinking Minnow Jerkbait Lure\u003c\/a\u003e for outdoor adventures.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Does the USB to RS485\/RS232 converter module require a driver installation?\u003c\/h4\u003e\n\u003cp\u003eA: No. The module uses the CH343G chip, which supports true plug-and-play functionality. It is compatible with Windows, macOS, and Linux operating systems and is recognized automatically without the need for manual driver installation in most cases.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I switch between RS485 and RS232 modes without any tools?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The module features an on-board DIP switch that allows you to toggle between RS485 and RS232 modes quickly and easily — no soldering or additional hardware required.\u003c\/p\u003e\n\u003ch4\u003eQ: How far can this module transmit data?\u003c\/h4\u003e\n\u003cp\u003eA: In RS485 mode, the module supports transmission distances of up to approximately 1,200 metres at low data rates. In RS232 mode, the effective range is approximately 10 metres. For RS485 networks with more than 16 nodes, using a repeater is recommended for optimal signal integrity.\u003c\/p\u003e\n\u003ch4\u003eQ: What protection features does this converter module include?\u003c\/h4\u003e\n\u003cp\u003eA: The module is equipped with an on-board TVS (Transient Voltage Suppressor) for 600W lightning protection and up to 15KV electrostatic protection, a 200mA self-resetting fuse, a protection diode, and an on-board 120Ω balancing resistor for stable RS485 signal quality.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Does the USB to RS485\/RS232 converter module require a driver installation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. The module uses the CH343G chip, which supports true plug-and-play functionality. It is compatible with Windows, macOS, and Linux operating systems and is recognized automatically without the need for manual driver installation in most cases.\"}}, {\"@type\": \"Question\", \"name\": \"Can I switch between RS485 and RS232 modes without any tools?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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