{"product_id":"sma-sunny-island-communication-unit","title":"SMA Sunny Island Communication Unit","description":"\u003cdiv class=\"product-section\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eSMA Sunny Island Communication Unit SI-COMSMA-NR\u003c\/strong\u003e is an RS485 communication interface expansion kit for Sunny Island off-grid inverters, enabling integration with SMA Data Manager, Sunny Portal, and other monitoring systems.\u003c\/p\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThis retrofit communication module adds RS485 connectivity to Sunny Island inverters (3.0M to 8.0H series), allowing connection to external monitoring devices and cloud platforms. It supports Modbus RTU protocol for system status, performance data, and remote control functions.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRS485 interface:\u003c\/strong\u003e Modbus RTU communication for third-party integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetrofit installation:\u003c\/strong\u003e Simple plug-in installation into Sunny Island inverters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCloud connectivity:\u003c\/strong\u003e Enables data logging to Sunny Portal via Data Manager.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-device support:\u003c\/strong\u003e Daisy-chain multiple inverters and devices on RS485 bus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust design:\u003c\/strong\u003e Industrial-grade interface for harsh environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication protocol:\u003c\/strong\u003e Modbus RTU over RS485.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBaud rates:\u003c\/strong\u003e 9600, 19200, 38400 bps (configurable).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBus topology:\u003c\/strong\u003e Half-duplex, up to 32 devices per segment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTermination:\u003c\/strong\u003e Built-in switchable termination resistor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower supply:\u003c\/strong\u003e Powered from Sunny Island inverter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector:\u003c\/strong\u003e RJ45 for easy cabling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePhysical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Compact module fitting Sunny Island expansion slot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Internal installation within inverter enclosure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e −25°C to +70°C (inverter-rated).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHumidity:\u003c\/strong\u003e 5–95% non-condensing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED indicators:\u003c\/strong\u003e Communication status and error codes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSystem \u0026amp; Application Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Sunny Island 3.0M, 4.4M, 6.0H, 8.0H series inverters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Off-grid systems, hybrid PV-storage, multicluster configurations requiring monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegration:\u003c\/strong\u003e Connects to SMA Data Manager M, Sunny Home Manager, or third-party Modbus systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Requires inverter firmware compatibility; professional installation recommended.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Covered by Sunny Island inverter warranty terms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SMA Sunny Boy","offers":[{"title":"Default Title","offer_id":63112906309981,"sku":"SI-COMSMA-NR","price":90.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/SMASunnyIslandCommunicationUnitSI-COMSMA-NR.jpg?v=1768485982","url":"https:\/\/qualityheating.co.uk\/products\/sma-sunny-island-communication-unit","provider":"AIZO Quality Heating","version":"1.0","type":"link"}