Low‑Power IoT Concentrator – 512-Kbit EEPROM, Dual RS485/M‑Bus Interfaces, Battery Backup | Wantai

In the era of smart metering and IoT infrastructure, the reliability and intelligence of data acquisition terminals directly determine the efficiency of utility management systems. For water utilities and industrial facilities, collecting accurate consumption data from distributed meters is essential for billing, leak detection, and network optimization. The DCT-2320 Series Wired Concentrator from Yangzhou Wantai Electronic Technology Co., Ltd. is a versatile data acquisition terminal engineered to bridge the gap between field meters and central management platforms.

At the core of this terminal is a high-performance 8-bit ultra-low-power MCU hardware platform, complemented by an expanded 512-Kbit EEPROM data storage space. This robust architecture enables the terminal to periodically collect and securely store various data from water meters, ensuring information integrity even during communication interruptions. The terminal supports both mains power and battery power options, with an industrial-grade power module ensuring stable operation. Battery specifications include a 7.2V/57AH configuration, with an automatic switchover to battery power during mains outages—a critical feature for maintaining data collection continuity in remote or unstable grid environments.

Communication flexibility is another standout feature. The terminal supports multiple upstream protocols, including DL/T 645-1997, CJ/T 188-2004, and the proprietary Jason protocol. For uplink communication, users can choose between a 4G or 2G wireless module, with the default configuration being a 4G module for GPRS network connectivity. This modular design allows operators to select the most appropriate communication module for their specific network infrastructure, ensuring compatibility across diverse deployment scenarios.

Downstream connectivity is equally versatile. The terminal offers two-channel RS485 meter reading interfaces or two-channel M-Bus meter reading interfaces, depending on the model. The DCT-2320GM supports M-Bus communication with a load capacity of ≤200mA per bus interface at 28V, accommodating up to 128 meters without valves or 64 meters with valves per interface. The DCT-2320GR supports RS485 communication with each bus interface handling up to 64 meters. Both models feature M-Bus bus overload protection and output short-circuit protection, safeguarding both the terminal and connected meters from electrical faults.

Data storage and system reliability are prioritized through an expanded 512-Kbit EEPROM, which ensures the security and integrity of all stored data. The terminal also incorporates built-in self-diagnostic capabilities, continuously monitoring its own operational status to guarantee reliable performance. With a mean time between failures (MTBF) of ≥10×10⁴ hours, this terminal is designed for long-term, maintenance-free operation in demanding environments.

The mechanical design reflects practical installation needs: a sealed enclosure made of flame-retardant ABS material with a wall-mounted structure that is compact and lightweight. This simplifies deployment in meter rooms, utility cabinets, or outdoor enclosures. Overall power consumption is remarkably low—with 220V AC input, consumption is less than 1.5W in non-meter-reading state, while battery-powered mode consumes ≤10µA, supporting scheduled meter reading and data reporting without real-time online operation.

For utilities and system integrators seeking a reliable, configurable data acquisition solution, the DCT-2320 Series offers a proven combination of connectivity options, robust storage, and intelligent power management. To explore how this terminal can enhance your metering infrastructure, visit the full product page from Wantai today.