S-BUS to RS232 Module for Cool Master / VRV VRF enables seamless communication between S-BUS based HVAC systems and RS232 controllers. Designed for reliable integration, it allows centralized monitoring, control, and automation of VRV/VRF air conditioning systems.

The S-BUS to RS232 Module for Cool Master / VRV–VRF Systems (G4) is a high-reliability communication gateway engineered for HVAC automation and building management systems. It enables seamless protocol translation between S-BUS networks and RS232 serial communication, allowing centralized monitoring and control of VRV/VRF air-conditioning systems via Cool Master or third-party controllers.

Built on advanced G4 (Generation 4) architecture, this module ensures stable, low-latency data transmission, accurate command execution, and robust immunity against electrical noise. It supports bi-directional communication, enabling real-time feedback of temperature, mode, fan speed, alarms, and operational status.

Designed for commercial buildings, hotels, hospitals, data centers, and smart infrastructure, the module simplifies HVAC integration into BMS, SCADA, PLC, and automation controllers. Its cascadable design, manual configuration capability, and USB-based firmware upgradability make it a future-ready solution for expanding automation networks.

Key Features

• S-BUS to RS232 protocol conversion
• Designed for Cool Master, VRV, and VRF HVAC systems
• Bi-directional communication for control and feedback
• Supports real-time monitoring and command execution
• Manual addressing and configuration
• Cascadable architecture for large HVAC networks
• USB firmware upgradable
• High immunity to electrical noise and communication errors
• Industrial-grade components for long-term reliability
• Seamless integration with BMS, PLC, and SCADA systems

Applications

• VRV / VRF HVAC system integration
• Cool Master controller interfacing
• Building Management Systems (BMS)
• Smart hotels and commercial buildings
• Hospitals and healthcare HVAC automation
• Data centers and critical infrastructure
• Centralized HVAC monitoring and control
• PLC-based automation systems
• Energy management platforms
• Industrial and commercial climate control

Technical Specifications

Why Choose the S-BUS to RS232 Module (G4)?

• Reliable HVAC communication gateway
• Simplifies VRV/VRF system integration
• Ensures accurate, real-time HVAC control
• Designed for large-scale commercial deployments
• Easy to expand with cascadable design
• Future-proof with USB firmware upgradability
• Industrial-grade G4 engineering for stability and performance