PRODUCT ID: 3800238074487

Description

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. This is an expansion add-on and not a standalone device. It requires a compatible Shelly PRO device to operate Shelly PRO EM-50 Shelly PRO 3EM 120 A Shelly PRO 3EM-400 Shelly PRO 1 or Shelly PRO 2.

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

Last updated: Friday, 2 October 2026

Warranty

This product is sourced in Australia and carries a full Australian Manufacturers Warranty