{"product_id":"din-rail-4-channel-rs485-relay-module-modbus-rtu-high-current","title":"DIN Rail 4-Channel RS485 Relay Module – Modbus RTU Protocol","description":"\n\u003ch2\u003e4-Channel DIN Rail RS485 Relay Module with Modbus RTU Protocol\u003c\/h2\u003e\n\u003cp\u003eTake your industrial automation and control projects to the next level with this robust \u003cstrong\u003e4-Channel RS485 High-Current Relay Module\u003c\/strong\u003e. Designed for demanding environments, this module leverages the \u003cstrong\u003eModbus RTU communication protocol\u003c\/strong\u003e over an RS485 interface, delivering fast, stable, and reliable operation across a wide range of industrial control applications.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4 Independent High-Current Relay Channels\u003c\/strong\u003e — Control multiple circuits simultaneously with ease\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModbus RTU Protocol via RS485 Interface\u003c\/strong\u003e — Industry-standard communication for seamless integration with PLCs, SCADA systems, and automation controllers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in Power Isolation\u003c\/strong\u003e — Separates control and power circuits to protect sensitive equipment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eADI Magnetic Coupling Isolation\u003c\/strong\u003e — Advanced isolation technology for superior noise immunity and signal integrity\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-Recovery Fuse \u0026amp; TVS Protection Circuits\u003c\/strong\u003e — Multiple layers of protection guard against overcurrent, surges, and transient voltage spikes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDIN Rail ABS Housing\u003c\/strong\u003e — Standard DIN rail mount for quick, tool-friendly installation in control panels and enclosures\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Communication Speed\u003c\/strong\u003e — Reduces latency for time-sensitive control tasks\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy to Operate\u003c\/strong\u003e — Straightforward setup and configuration; compatible with a variety of industrial control systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eCommunication Protocol\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eModbus RTU\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eRS485\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eIsolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003ePower Isolation + ADI Magnetic Coupling Isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eProtection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eSelf-Recovery Fuse + TVS Circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eHousing Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eABS (DIN Rail Mount)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eBody Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eAluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × 4-Channel RS485 Relay Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Due to different display settings and lighting conditions, the actual product color may vary slightly from images shown. Measurement tolerance: ±1–3 cm. Product specifications may be updated between batches; minor visual differences do not affect performance.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIndustrial automation and PLC control panels\u003c\/li\u003e\n  \u003cli\u003eBuilding management systems (BMS)\u003c\/li\u003e\n  \u003cli\u003eSmart factory and IoT control applications\u003c\/li\u003e\n  \u003cli\u003eData acquisition and SCADA integration\u003c\/li\u003e\n  \u003cli\u003eAny application requiring high-speed, reliable RS485 relay switching\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-wooden-handle-nylon-bristle-paint-brush-for-oil-painting-dusting-and-cleaning-unrechargeable-hand-tool-set-without-batt-2\"\u003e10Pcs Wooden Handle Nylon Bristle Paint Brush – Hand Tool Set\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-precision-japanese-double-edged-hand-saw-sk5-steel-fine-toothed-for-carpentry-and-gardening-6-inch-blade-portable-mini-1\"\u003e1pc Precision Japanese Double-Edged Hand Saw – SK5 Steel\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-professional-heavy-duty-pruning-shears-with-anti-slip-handle-design-suitable-for-trimming-thick-and-sturdy-branches\"\u003e1pc Professional Heavy-Duty Pruning Shears with Anti-Slip Handle\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What communication protocol does this 4-channel relay module support?\u003c\/h4\u003e\n\u003cp\u003eA: This relay module supports the \u003cstrong\u003eModbus RTU protocol\u003c\/strong\u003e over an \u003cstrong\u003eRS485 interface\u003c\/strong\u003e, making it fully compatible with the vast majority of PLCs, HMIs, SCADA systems, and other industrial automation controllers that use this industry-standard communication standard.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What protection features are built into this RS485 relay module?\u003c\/h4\u003e\n\u003cp\u003eA: The module includes multiple layers of protection: \u003cstrong\u003ebuilt-in power isolation\u003c\/strong\u003e, \u003cstrong\u003eADI magnetic coupling isolation\u003c\/strong\u003e, a \u003cstrong\u003eself-recovery fuse\u003c\/strong\u003e, and \u003cstrong\u003eTVS (Transient Voltage Suppressor) circuits\u003c\/strong\u003e. Together, these safeguard both the module and connected equipment from electrical noise, overcurrent events, and voltage transients common in industrial environments.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How is this relay module mounted?\u003c\/h4\u003e\n\u003cp\u003eA: The module features a standard \u003cstrong\u003eDIN rail ABS housing\u003c\/strong\u003e, allowing it to snap directly onto any standard DIN rail inside a control panel or enclosure — no special tools or brackets required for installation.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this module suitable for high-current applications?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. This is specifically designed as a \u003cstrong\u003ehigh-current relay module\u003c\/strong\u003e, making it well-suited for switching high-load circuits in industrial machinery, building systems, and other demanding control applications.\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\": \"What communication protocol does this 4-channel relay module support?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This relay module supports the Modbus RTU protocol over an RS485 interface, making it fully compatible with the vast majority of PLCs, HMIs, SCADA systems, and other industrial automation controllers that use this industry-standard communication standard.\"}}, {\"@type\": \"Question\", \"name\": \"What protection features are built into this RS485 relay module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The module includes multiple layers of protection: built-in power isolation, ADI magnetic coupling isolation, a self-recovery fuse, and TVS (Transient Voltage Suppressor) circuits. Together, these safeguard both the module and connected equipment from electrical noise, overcurrent events, and voltage transients common in industrial environments.\"}}, {\"@type\": \"Question\", \"name\": \"How is this relay module mounted?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The module features a standard DIN rail ABS housing, allowing it to snap directly onto any standard DIN rail inside a control panel or enclosure — no special tools or brackets required for installation.\"}}, {\"@type\": \"Question\", \"name\": \"Is this module suitable for high-current applications?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. This is specifically designed as a high-current relay module, making it well-suited for switching high-load circuits in industrial machinery, building systems, and other demanding control applications.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/pg0se5-51.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/pg0se5-51.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"DIN Rail 4-Channel RS485 Relay Module – Modbus RTU Protocol\", \"item\": \"https:\/\/pg0se5-51.myshopify.com\/products\/din-rail-4-channel-rs485-relay-module-modbus-rtu-high-current\"}]}\u003c\/script\u003e","brand":"Babs","offers":[{"title":"Black","offer_id":53151298814092,"sku":"14:202997806#Black","price":114.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/2862\/6316\/files\/Sd730ec3ffe1941159524d216a52a5d00n.webp?v=1787161498","url":"https:\/\/babcustomersupport.com\/products\/din-rail-4-channel-rs485-relay-module-modbus-rtu-high-current","provider":"Babs","version":"1.0","type":"link"}