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Shelly PRO Modbus Add-on RS485

The compact DIN-rail Add-on brings professional RS485/Modbus communication to compatible Shelly PRO devices, enabling seamless integration with BMS, EMS, SCADA, PLCs, HVAC systems, and inverters.

Designed for reliable long-distance, noise-resistant wired communication, it supports both Modbus client and server modes, allowing Shelly PRO devices to read external data or share their own measurements with external systems - without gateways.

Key features:

✓ RS485/Modbus Communication: Enables long-distance, noise-resistant wired communication, ideal for commercial and professional environments.

✓ Standardized Protocol: Ensures compatibility with existing BMS, EMS, SCADA, PLCs without custom gateways.

✓ Modbus Client Mode: Allows Shelly devices to read data from external meters, HVAC systems, inverters, and controllers.

✓ Modbus Server Mode: Shares Shelly measurements and states with BMS, EMS, SCADA, and monitoring platforms.

✓ Multi-Device Network Support: Handles up to 32 nodes on the same RS485 bus for scalable system integration.

✓ Half-Duplex Operation: Provides reliable data exchange at speeds up to 10 Mbps over distances to 50m outdoors (depending on local conditions).

✓ Wide Environmental Range: Operates from -20°C to 40°C with 30-70% humidity, up to 2000 m altitude.

✓ Low Power Consumption: Uses under 1 W, powered via 3.3V or 12V from the host device.

✓ DIN Rail Mounting: Designed for secure installation in professional panels and enclosures.

✓ No Gateway Needed: integrates directly into existing wired automation setups, reducing complexity and installation cost.

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PLC and Factory Automation

Scenario: Professional users need a compact way to connect Shelly PRO devices to PLC-based systems.

How it works: Over RS485, the add-on allows Shelly PRO devices to communicate with PLCs, gateways, and professional controllers for process monitoring and equipment control.

Multi-Site Energy Management

Scenario: EMS providers track loads across commercial sites with existing wired networks.

How it works: Multi-node RS485 enables reliable integration of multiple Shelly PRO devices into centralized EMS or SCADA systems.

HVAC System Connectivity

Scenario: Building operators want to monitor and control HVAC auxiliaries in large installations.

How it works: PRO devices with add-on read HVAC data as Modbus client and link to automation platforms over long RS485 runs for optimized operation.

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Shelly Europe Ltd 51 Cherni Vrah Blvd. Office X, Building 3, Floor 2-3 Sofia, 1407