Smart HVAC Controller with RS485 Modbus for Multi-Zone Air Quality Monitoring and Motorized Air Valves

Create a smarter indoor ventilation environment with an integrated air quality monitoring and fresh air control system. The solution consists of a central touchscreen controller, G3 Fresh Air Controllers, ventilation fan, and motorized air valves connected through a structured RS485 communication network.

Designed for multi-zone applications, the system enables users to monitor indoor air quality in different rooms while managing ventilation and airflow distribution. The touchscreen interface provides a convenient centralized control experience, while room controllers provide localized environmental data.

This solution is suitable for smart residential ventilation, whole-house fresh air systems, villas, apartments, offices, and HVAC engineering projects.

Key Features

• Smart Whole-Home Ventilation Management – Centralized management for multiple ventilation zones.
• Room-by-Room Air Quality Data – Monitor environmental conditions across different areas.
• Multiple Air Quality Parameters – Supports monitoring of PM2.5, CO₂, VOC, temperature and humidity.
• RS485 Wired Communication – Provides a practical communication solution for multi-controller installations.
• Motorized Zone Air Valves – Allows airflow to be distributed according to different room requirements.
• Central Ventilation Fan Control – Integrates the main ventilation equipment into the system.
• Clean & Professional System Design – Suitable for modern residential and commercial projects.
• Expandable Multi-Room Configuration – Can be configured with multiple room controllers and air valves.
• Touchscreen User Interface – Convenient operation and easy-to-view indoor air quality information.
• Designed for HVAC & Smart Home Integration – Suitable for system integrators, HVAC contractors, distributors, and OEM customers.

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