Leading-edge HART to Modbus, RS485 to TCP, and GPRS remote transmission modules for mission-critical automation.
In the era of Industrial 4.0, the global demand for Modbus and RS485 factories has surged, driven by the necessity to integrate "dumb" analog sensors into intelligent, cloud-based monitoring systems. From the oil fields of Texas to the smart factories of Germany, procurement managers are no longer just looking for hardware; they are seeking Information Gain—the ability to extract actionable data from legacy HART and 4-20mA instruments.
The resilience of RS485 as a physical layer, combined with the universality of the Modbus protocol, makes it the backbone of global industrial communication. Our wholesale solutions focus on high-precision converters that ensure zero data loss during the transition from field instruments to PLC/SCADA systems.
Seamlessly bridging HART, Modbus RTU, and Modbus TCP/IP across diverse hardware ecosystems.
Designed for extreme electromagnetic interference (EMI) environments with full electrical isolation.
Integrated GPRS/4G modules for real-time data collection in remote water and gas utility networks.
As a leading Modbus factory, Songmao Electronics is pioneering the transition toward Edge Computing Gateway technology. Our technical roadmap emphasizes three core pillars:
The "Wholesale Modbus" market is shifting from simple wiring components to intelligent nodes. Future prospects include 5G-integrated RS485 hubs and LoRaWAN-to-Modbus long-range wireless gateways, ensuring that even the most geographically dispersed assets remain connected.
Established in 2007, Jiaxing Songmao Electronics Co., Ltd. has evolved from a specialized R&D lab into a global leader in industrial automation communication. Our 18-year journey is defined by a commitment to the E-E-A-T principle: providing expert-level engineering, authoritative protocol support, and reliable hardware that withstands the test of time.
Our 1,073㎡ state-of-the-art facility focuses on HART protocol communication products and multivariable data collectors, serving over 40 countries with localized support and rigorous compliance standards.
Acquiring real-time pressure and flow data from HART transmitters for centralized SCADA monitoring.
Low-power RS485 data collectors for remote pump station management and leak detection.
Modbus-TCP gateways for smart building energy optimization and heat meter data aggregation.
Reliable 4-20mA to RS485 conversion for air quality and wastewater monitoring sensors.
Standard 4-20mA signals only provide one process variable. HART converters extract secondary/tertiary variables and device diagnostics, providing a 300% increase in data richness from the same sensor.
Centralization reduces wiring complexity, minimizes power consumption, and provides a single Modbus register map for easier PLC integration, significantly lowering the Total Cost of Ownership (TCO).
Yes, all Songmao products undergo strict QC and are designed to meet CE, FCC, and RoHS standards, ensuring compliance for global exports and high-reliability industrial use.
