In the era of Industry 4.0, the demand for stable, low-latency, and cost-effective communication protocols has never been higher. As a veteran Modbus RTU Protocol Supplier, Jiaxing Songmao Electronics Co., Ltd. recognizes that the transition from legacy analog systems to integrated digital ecosystems requires more than just hardwareโit requires Information Gain. Our solutions bridge the gap between complex field instrumentation and centralized SCADA/ERP systems.
Since 2007, we have specialized in the "translation layer" of industrial communication. Whether it is converting HART signals to Modbus RTU or enabling multi-channel data acquisition via RS485, our factory focuses on Signal Integrity and Environmental Resilience.
International enterprises are moving away from proprietary, locked-in protocols. The global market is surging for open-standard Modbus RTU gateways that allow for vendor-neutral maintenance and modular upgrades. Our factory supports these needs with high-MTBF components.
Located in the heart of the Yangtze River Delta, our factory leverages a world-class electronics ecosystem. This allows us to offer wholesale Modbus RTU pricing without compromising on international standards like CE, FCC, or RoHS. We maintain full control over the PCBA design and firmware optimization.
Every region has its nuances. Our products feature isolated RS485 interfaces and wide-voltage power supplies (AC220V or DC24V) to meet the electrical code requirements of North America, Europe, and Southeast Asia. Localized technical support ensures seamless onsite commissioning.
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In harsh explosive environments, our HART-to-Modbus RTU converters allow refineries to pull digital diagnostic data from pressure transmitters back to the control room using simple twisted-pair RS485 wiring, saving miles of cabling costs.
8-Channel data collectors enable city-wide water monitoring. By aggregating flow meter data via Modbus RTU and uploading it to a Modbus TCP gateway, municipalities can detect leaks in real-time with millisecond accuracy.
Centralized heating systems utilize our RS485 distributors to manage hundreds of temperature sensors. Our technology ensures that signal collisions are minimized, and data reliability is maximized even in high-EMI environments.
The industry is seeing a massive shift toward Edge Protocol Conversion. Modern factories no longer want "dumb" converters; they want intelligent gateways capable of local data buffering and protocol auto-negotiation. As a leading factory, Songmao is integrating AI-based diagnostic features into our Modbus firmware to predict cable failures or sensor drift before they cause downtime.
Furthermore, the Convergence of OT and IT is driving the demand for HART to Modbus-TCP/RTU hybrid devices. Our SM100-W and SM100-TCP series are designed precisely for this trend, allowing legacy field devices to participate in modern cloud-based analytics platforms.
Buying direct ensures you receive the latest firmware revisions, full technical support for complex protocol mapping, and significant cost savings on wholesale orders. We offer customization (OEM/ODM) that standard distributors cannot provide.
Yes, our SM100 series can read primary, secondary, tertiary, and quaternary variables from HART devices and map them to standard Modbus registers for easy SCADA integration.
We use industrial-grade optical isolation and TVS surge protection on our RS485 and RS232 ports. Our PCBA designs are tested for electromagnetic compatibility (EMC) to ensure reliable operation near high-voltage motors and VFDs.
As a direct manufacturer, we maintain a steady stock of core modules. Standard wholesale orders typically ship within 5-7 business days, while custom protocol configurations may take 2 weeks.
4-20mA, modbus protocol, GPRS remote 
hart to modbus, hart to 485, HART Int