{"product_id":"shelly-pro-modbus-add-on-rs485","title":"Shelly Pro Modbus Add-on RS485","description":"\u003ch2\u003e\u003cstrong\u003eShelly Pro Modbus RS485 Add-on | Smart Building Automation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConnect your Shelly Pro devices to professional automation and energy management systems with the \u003cstrong\u003eShelly Pro Modbus Add-on RS485\u003c\/strong\u003e. This compact expansion module adds wired RS485 communication to compatible Shelly Pro devices, enabling integration with Building Management Systems (BMS), Energy Management Systems (EMS), SCADA platforms and other Modbus-compatible equipment.\u003c\/p\u003e\n\u003cp\u003eDesigned for reliable communication in electrically demanding environments, it is suited to commercial buildings, large residential installations, industrial monitoring and renewable energy projects.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect expansion-port connection:\u003c\/strong\u003e Attaches to a compatible Shelly Pro device for a compact installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModbus client mode:\u003c\/strong\u003e Enables the host device to read data from compatible external meters and controllers, with a JavaScript interface and controller functionality.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModbus server mode:\u003c\/strong\u003e Makes measurements and states from supported host-device components available to other systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-device RS485 networks:\u003c\/strong\u003e Supports half-duplex communication with up to 32 nodes on the bus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWired connectivity:\u003c\/strong\u003e Provides a stable communication interface for building automation and monitoring installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN rail mounting:\u003c\/strong\u003e Fits into professional electrical and automation enclosures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStatus indicators:\u003c\/strong\u003e RX and TX LEDs show data activity, while a red power indicator confirms the module is powered.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatible Shelly Devices\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eShelly Pro EM-50\u003c\/li\u003e\n\u003cli\u003eShelly Pro 3EM (120 A)\u003c\/li\u003e\n\u003cli\u003eShelly Pro 3EM 400\u003c\/li\u003e\n\u003cli\u003eShelly Pro 1\u003c\/li\u003e\n\u003cli\u003eShelly Pro 2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eA compatible Shelly Pro host device is required.\u003c\/strong\u003e The add-on expands the host’s communication capabilities; available measurements and control functions depend on the host model.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy monitoring:\u003c\/strong\u003e Transfer measurements from compatible Shelly Pro energy meters to BMS, EMS or SCADA systems for consumption tracking and analysis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilding automation:\u003c\/strong\u003e Connect supported Shelly Pro devices to controllers managing lighting, electrical loads and building equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial automation:\u003c\/strong\u003e Exchange data with compatible PLCs, motor controllers and gateways in workshops and production facilities.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRenewable energy:\u003c\/strong\u003e Integrate with compatible solar inverters, battery-system controllers and energy gateways using Modbus over RS485.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHVAC integration:\u003c\/strong\u003e Exchange operational data with compatible HVAC equipment and connect auxiliary equipment to building automation systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIntegration requires compatible Modbus functions, register mappings and communication settings on the connected equipment.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCommunication\u003c\/th\u003e\n\u003ctd\u003eModbus over RS485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOperating modes\u003c\/th\u003e\n\u003ctd\u003eModbus client or Modbus server\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRS485 interface\u003c\/th\u003e\n\u003ctd\u003eA, B and GND terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBus operation\u003c\/th\u003e\n\u003ctd\u003eHalf-duplex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eNumber of nodes\u003c\/th\u003e\n\u003ctd\u003eUp to 32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePower supply specification\u003c\/th\u003e\n\u003ctd\u003e3.3 V DC, 12 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePower consumption\u003c\/th\u003e\n\u003ctd\u003eLess than 1 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDimensions (H × W × D)\u003c\/th\u003e\n\u003ctd\u003e94 × 19 × 69 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e48 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eDIN rail; Shelly proprietary serial expansion interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHousing\u003c\/th\u003e\n\u003ctd\u003eBlack plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eConnector colours\u003c\/th\u003e\n\u003ctd\u003eBlack and green\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOperating temperature\u003c\/th\u003e\n\u003ctd\u003e-20°C to 40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eOperating humidity\u003c\/th\u003e\n\u003ctd\u003e30–70% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaximum altitude\u003c\/th\u003e\n\u003ctd\u003e2,000 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eConductor cross-section\u003c\/th\u003e\n\u003ctd\u003e0.3–2.0 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eConductor stripped length\u003c\/th\u003e\n\u003ctd\u003e6–8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaximum terminal tightening torque\u003c\/th\u003e\n\u003ctd\u003e0.4 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation and Setup\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eConnect the add-on to the expansion port of a supported Shelly Pro device and wire the RS485 bus using the A, B and GND terminals according to the manufacturer’s installation guide. Configure the operating mode and communication settings to match your system.\u003c\/p\u003e\n\u003cp\u003eInstallation within mains electrical enclosures should be completed by a licensed electrician. Follow the manufacturer’s instructions for power connections, bus wiring and network configuration.\u003c\/p\u003e","brand":"Shelly","offers":[{"title":"Default Title","offer_id":47985046716587,"sku":"SHELLYPROMOD","price":49.99,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2308\/2087\/files\/Shellyadd11.png?v=1790821199","url":"https:\/\/www.ozsmartthings.com.au\/products\/shelly-pro-modbus-add-on-rs485","provider":"Oz Smart Things Pty Ltd","version":"1.0","type":"link"}