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MG301
4G Metering Gateway

MG301 is a cellular gateway designed for automated meter reading. It connects field meters to head-end systems over 4G networks, supporting multiple metering protocols, flexible interfaces, and reliable remote communication.

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MG301
4G Metering Gateway

MG301 is a cellular gateway designed for automated meter reading. It connects field meters to head-end systems over 4G networks, supporting multiple metering protocols, flexible interfaces, and reliable remote communication.

Request a Quote

PHOTO

Built for Reliable Remote Meter Reading

Reliable 4G Connectivity

LTE Cat.1/Cat.4 options, automatic link recovery, and built-in watchdog mechanisms help maintain reliable communication across distributed metering sites.

Broad protocol support

Multiple Metering Protocols

Supports IEC 62056-21 Mode C, DLMS/COSEM, and Modbus RTU for communication with a wide range of compatible meters.

Protocol transparency

 Flexible Interfaces for Field Integration

Dual isolated RS485 ports and built-in digital I/O support diverse field connections, with Ethernet and relay outputs available as options.

Edge data monitoring

Head-End System Integration

Supports MQTT/MQTTS, MASS, and TeleMetriX Head-End protocols for data communication with compatible meter data collection systems.

Event Detection & Remote Maintenance

Power failure and enclosure-opening detection help identify field issues, while remote firmware upgrades simplify ongoing maintenance.

Industrial-Grade Design

Wide-range 55–270 VAC input, -30°C to 70°C operation, and Li-ion battery or supercapacitor options support deployment in demanding electrical environments.

  • Key Technical Specifications
    Cellular 4G cellular module, CAT1/CAT4
    Hardware Platform MIPS24KEc (575/580 MHz); 128MB RAM; 64MB Flash
    Metering Protocols IEC62056-21 Mode-C; DLMS/COSEM; Modbus RTU
    Platform Access MQTT/MQTTS/MASS/TeleMetriX Head-End
    Interfaces 2 × isolated RS485; 1 × USB2.0 Type-C; 4 × DI; 2 × DO; 2 × latching relay outputs (optional); 1 × 100Mbps Ethernet (optional)
    Power 55–270 VAC, nominal 230 V; 20 VA (max.)
    Dimensions 130 × 125 × 68 mm (specification table)
    Operating Environment -30 to 70 °C; 0–93% ambient humidity
    Protection IP40
  • Product Interfaces
    Ethernet 1 × 100Mbps Ethernet port, RJ45 connector (optional)
    Cellular 4G cellular module, CAT1/CAT4
    USB 1 × USB2.0, Type-C
    Serial Port 2 × RS485, isolated, terminal-block connector; RS485: Data+, Data-, GND
    SIM Card Mini SIM-2FF card, supports 1.8/3V SIM/UIM card; eSIM
    Antenna Connector 1 × Cellular Antenna
    Button 1 × System reset button
    Open Lid Detection 1 × Open Cover Inspection key
    Relay Outputs 2 × relay outputs: 240VAC/5A, latching relay output (optional)
    Digital Inputs 4 × digital inputs; isolation voltage: 3500 V; dry contact: Logic 1, Open; Logic 0, Close to ground; wet contact: VIH(max.) = 30 VDC, VIH(min.) = 5 VDC, VIL(max.) = 2 VDC
    Digital Outputs 2 × digital outputs; isolation voltage: 3500 V; supply voltage: 20 V max.; sink current: 0.5 A max.
  • Hardware Platform
    CPU MIPS24KEc (575/580 MHz)
    RAM 128MB
    FLASH 64MB
  • Interfaces
    Ethernet Port 1 × 100Mbps Ethernet port, RJ45 connector (optional)
    Cellular 4G cellular module, CAT1/CAT4
    USB 1 × USB2.0, Type-C
    Serial Port 2 × RS485, isolated, terminal-block connector; RS485: Data+, Data-, GND
    SIM Card Mini SIM-2FF, supports 1.8/3V SIM/UIM card; eSIM
    Antenna Connector 1 × Cellular Antenna
    Button 1 × System reset button
    Open Lid Detection Device 1 × Open Cover Inspection key
    Relay Outputs 2 × relay outputs: 240VAC/5A, latching relay output (optional)
    Digital Inputs 4 × digital inputs; isolation voltage: 3500 V; dry contact: Logic 1, Open; Logic 0, Close to ground; wet contact: VIH(max.) = 30 VDC, VIH(min.) = 5 VDC, VIL(max.) = 2 VDC
    Digital Outputs 2 × digital outputs; isolation voltage: 3500 V; supply voltage: 20 V max.; sink current: 0.5 A max.
  • Other Hardware
    RTC Real time clock operated from on-board coin-cell battery
    Punctuality Accuracy 0.5 S/day
    Battery Li-ion battery (500mAh) or supercapacitor (Li-ion battery default)
  • Power
    Power Supply AC input: unregulated 55V to 270 VAC, nominal 230V, instantaneous voltage protection of 6KV; reverse voltage protection
    Power Consumption 20VA (max.)
  • Mechanical Characteristics
    Mounting DIN rail / mounting ear (default)
    Enclosure Material Plastic
    Dimension 130 × 125 × 61 mm
    Protection IP40
  • Ambient Temperature and Humidity
    Operating Temperature -30 to 70 °C
    Ambient Humidity 0–93%
    Declared Pollution Degree 3
    Overvoltage Category CAT III
  • LED
    System 1 × Power, 3 × CSQ, 1 × IP, 1 × 4G, 1 × GPRS, 2 × RS485, 2 × Relay
  • Safety & EMC
    Safety & EMC IEC 62368-1; EN 55032 Class B; EN 55035 Level 3
  • Other Standards
    Others EN 60068-2-30; EN 60068-2-31; EN 60068-2-1; EN 60068-2-2; EN 62262; IEC 60529; IEC 60695-11-10 standard V-0 class
  • Operating System
    OS Linux
  • Internet
    Access authentication APN, VPDN
    Internet access CHAP, PAP
    Network format LTE CAT 1
  • Network Protocol
    IP Application ICMP, DNS, TCP/UDP, TCP Server, DHCP, NTP
    IP Routing Static routing
  • Reliability
    Cover Opening Alarm Detection lid is opened
    Power Failure Alarm Detecting an external power failure
    Link Detection Sends heartbeat packets to detect, auto redials when disconnected
    Embedded Watchdog Device runs self-detection, auto recovers from malfunctions
    Temperature Detection The CPU temperature can be detected and recorded in logs
  • Communication Protocol
    Acquisition Protocol IEC62056-21 Mode-C; DLMS/COSEM; Modbus RTU
    Access Platform MQTT/MQTTS/MASS/TeleMetriX Head-End
  • Network Management
    Configuration Web via USB/ETH
    Upgrade Local via USB/ETH; remote via FTP/InHand DM platform
    Log Support local system log and important log power-off autosave

Datasheets

MG301_Datasheet_V1.3
10.21.2026 1.3 MB

Standard package*

  • MG301 Metering Gateway *1
  • Cellular Antenna *1

*Standard package contents vary by standard crder codes.

Optional accessories

  • Wall Mount Kit *1

Contact us directly to learn more about our packaging options.

Specifications
  • Key Technical Specifications
    Cellular 4G cellular module, CAT1/CAT4
    Hardware Platform MIPS24KEc (575/580 MHz); 128MB RAM; 64MB Flash
    Metering Protocols IEC62056-21 Mode-C; DLMS/COSEM; Modbus RTU
    Platform Access MQTT/MQTTS/MASS/TeleMetriX Head-End
    Interfaces 2 × isolated RS485; 1 × USB2.0 Type-C; 4 × DI; 2 × DO; 2 × latching relay outputs (optional); 1 × 100Mbps Ethernet (optional)
    Power 55–270 VAC, nominal 230 V; 20 VA (max.)
    Dimensions 130 × 125 × 68 mm (specification table)
    Operating Environment -30 to 70 °C; 0–93% ambient humidity
    Protection IP40
  • Product Interfaces
    Ethernet 1 × 100Mbps Ethernet port, RJ45 connector (optional)
    Cellular 4G cellular module, CAT1/CAT4
    USB 1 × USB2.0, Type-C
    Serial Port 2 × RS485, isolated, terminal-block connector; RS485: Data+, Data-, GND
    SIM Card Mini SIM-2FF card, supports 1.8/3V SIM/UIM card; eSIM
    Antenna Connector 1 × Cellular Antenna
    Button 1 × System reset button
    Open Lid Detection 1 × Open Cover Inspection key
    Relay Outputs 2 × relay outputs: 240VAC/5A, latching relay output (optional)
    Digital Inputs 4 × digital inputs; isolation voltage: 3500 V; dry contact: Logic 1, Open; Logic 0, Close to ground; wet contact: VIH(max.) = 30 VDC, VIH(min.) = 5 VDC, VIL(max.) = 2 VDC
    Digital Outputs 2 × digital outputs; isolation voltage: 3500 V; supply voltage: 20 V max.; sink current: 0.5 A max.
  • Hardware Platform
    CPU MIPS24KEc (575/580 MHz)
    RAM 128MB
    FLASH 64MB
  • Interfaces
    Ethernet Port 1 × 100Mbps Ethernet port, RJ45 connector (optional)
    Cellular 4G cellular module, CAT1/CAT4
    USB 1 × USB2.0, Type-C
    Serial Port 2 × RS485, isolated, terminal-block connector; RS485: Data+, Data-, GND
    SIM Card Mini SIM-2FF, supports 1.8/3V SIM/UIM card; eSIM
    Antenna Connector 1 × Cellular Antenna
    Button 1 × System reset button
    Open Lid Detection Device 1 × Open Cover Inspection key
    Relay Outputs 2 × relay outputs: 240VAC/5A, latching relay output (optional)
    Digital Inputs 4 × digital inputs; isolation voltage: 3500 V; dry contact: Logic 1, Open; Logic 0, Close to ground; wet contact: VIH(max.) = 30 VDC, VIH(min.) = 5 VDC, VIL(max.) = 2 VDC
    Digital Outputs 2 × digital outputs; isolation voltage: 3500 V; supply voltage: 20 V max.; sink current: 0.5 A max.
  • Other Hardware
    RTC Real time clock operated from on-board coin-cell battery
    Punctuality Accuracy 0.5 S/day
    Battery Li-ion battery (500mAh) or supercapacitor (Li-ion battery default)
  • Power
    Power Supply AC input: unregulated 55V to 270 VAC, nominal 230V, instantaneous voltage protection of 6KV; reverse voltage protection
    Power Consumption 20VA (max.)
  • Mechanical Characteristics
    Mounting DIN rail / mounting ear (default)
    Enclosure Material Plastic
    Dimension 130 × 125 × 61 mm
    Protection IP40
  • Ambient Temperature and Humidity
    Operating Temperature -30 to 70 °C
    Ambient Humidity 0–93%
    Declared Pollution Degree 3
    Overvoltage Category CAT III
  • LED
    System 1 × Power, 3 × CSQ, 1 × IP, 1 × 4G, 1 × GPRS, 2 × RS485, 2 × Relay
  • Safety & EMC
    Safety & EMC IEC 62368-1; EN 55032 Class B; EN 55035 Level 3
  • Other Standards
    Others EN 60068-2-30; EN 60068-2-31; EN 60068-2-1; EN 60068-2-2; EN 62262; IEC 60529; IEC 60695-11-10 standard V-0 class
  • Operating System
    OS Linux
  • Internet
    Access authentication APN, VPDN
    Internet access CHAP, PAP
    Network format LTE CAT 1
  • Network Protocol
    IP Application ICMP, DNS, TCP/UDP, TCP Server, DHCP, NTP
    IP Routing Static routing
  • Reliability
    Cover Opening Alarm Detection lid is opened
    Power Failure Alarm Detecting an external power failure
    Link Detection Sends heartbeat packets to detect, auto redials when disconnected
    Embedded Watchdog Device runs self-detection, auto recovers from malfunctions
    Temperature Detection The CPU temperature can be detected and recorded in logs
  • Communication Protocol
    Acquisition Protocol IEC62056-21 Mode-C; DLMS/COSEM; Modbus RTU
    Access Platform MQTT/MQTTS/MASS/TeleMetriX Head-End
  • Network Management
    Configuration Web via USB/ETH
    Upgrade Local via USB/ETH; remote via FTP/InHand DM platform
    Log Support local system log and important log power-off autosave

Datasheets

MG301_Datasheet_V1.3
10.21.2026 1.3 MB

Standard package*

  • MG301 Metering Gateway *1
  • Cellular Antenna *1

*Standard package contents vary by standard crder codes.

Optional accessories

  • Wall Mount Kit *1

Contact us directly to learn more about our packaging options.

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Frequently Asked Questions

What is MG301 designed for?

MG301 is designed for automated meter reading applications. It enables head-end systems to communicate with field meters over cellular networks, retrieve meter data, and monitor meter operating parameters.

MG301 supports IEC 62056-21 Mode C, DLMS/COSEM, and Modbus RTU. Compatibility with individual meters depends on their communication interfaces and protocol implementations.

MG301 provides two isolated RS485 ports, four digital inputs, two digital outputs, and a USB Type-C port. Ethernet and latching relay outputs are available as options.

MG301 uses link monitoring, automatic reconnection, and hardware and software watchdog mechanisms to detect communication issues and recover from interruptions.

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