The Honeywell Analytics 301-C Gas Detection Controller is a high-capacity, multi-channel management hub engineered for commercial and industrial gas monitoring systems. As a direct replacement for the VA-201C-AC, VA301C, and M-505640, this controller facilitates Modbus communication across three separate channels, allowing for the integration of up to 96 wired E3Point or 301W transmitters. Its robust architecture supports up to 126 programmable zones, utilizing advanced averaging logic to optimize mechanical ventilation and reduce unnecessary fan cycles. The unit is housed in a NEMA 4X-rated ABS polycarbonate enclosure, making it suitable for demanding environments like parking structures and mechanical rooms. With optional BACnet/IP connectivity and BTL listing, the 301-C integrates seamlessly into modern Building Management Systems (BMS) to provide real-time data logging and alarm management without the need for complex internal programming. Key Benefits for Contractors: System Scalability: Manages up to 96 wired and 50 wireless transmitters for expansive facility coverage. Reduced Operational Costs: Energy-saving zoning logic prevents premature wear on ventilation motors and contactors. Streamlined Integration: Built-in Modbus RTU and available BACnet gateways ensure compatibility with existing automation frameworks. Long-Distance Reliability: Supports communication runs up to 2,000 feet per channel using standard twisted-pair wiring. Simplified Commissioning: Automatic self-test and warm-up routines verify sensor health during startup. Common Questions: Is the 301-C compatible with older Vulcain systems?Yes, the 301-C serves as the standard upgrade path for legacy VA-201C and VA301C controllers, maintaining compatibility with existing wiring topographies. How many relays are available on the base unit?The unit features four DPDT 5A relays, which can be expanded using S301R8 relay output modules for complex sequencing. Can I monitor different gas types on the same loop?Absolutely. The controller identifies and monitors diverse sensor inputs—including CO, NO2, and refrigerants—simultaneously across its 126 zones. This item is not eligible for free shipping. Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing. 301-C is the cross for VA301C
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