Shelly Pro Modbus Add-on RS485

An RS485 communication add-on for Shelly PRO devices, designed for integration with building and energy management systems. Direct attachment enables data exchange with external controllers and platforms.

Key Features

• Standard Modbus integration with BMS, EMS, SCADA, and PLC systems
• Direct plug-in to compatible Shelly PRO devices via expansion port
• RS485 wired communication for stable long-distance connectivity and multi-device networks (up to 32 nodes)
• Modbus Client mode for reading data from meters, inverters, HVAC, and external controllers without custom gateways
• Modbus Server mode for sharing device data and status with BMS, EMS, SCADA, and monitoring platforms
• Half-duplex operation for reliable data exchange at speeds up to 10 Mbps over distances of up to 50 m outdoors (depending on local conditions)
• Low power consumption under 1 W, powered via 3.3V or 12V from the host device
• Wide environmental range, operating from -20°C to 40°C with 30 - 70% humidity, up to 2000 m altitude
• App-based configuration via Shelly Smart Control for quick setup and management
• Hybrid wired and wireless ecosystem combining RS485 infrastructure with Shelly cloud and APIs
• DIN-rail-ready design for secure installation inside electrical panels