MG301-M
Modular MASS Modem
MG301-M is a modular cellular modem designed for automated meter reading. It plugs into compatible modular meters and connects them to head-end systems over 2G/4G networks, supporting standard metering protocols for remote data collection.
MG301-M
Modular MASS Modem
MG301-M is a modular cellular modem designed for automated meter reading. It plugs into compatible modular meters and connects them to head-end systems over 2G/4G networks, supporting standard metering protocols for remote data collection.
PHOTO
Purpose-Built for Modular Metering
Modular Design for Easy Integration
Designed to plug into the modem socket of compatible modular meters, enabling cellular communication without a separate external gateway.
Reliable 2G/4G Connectivity
LTE Cat.1 connectivity, automatic reconnection, and built-in watchdog mechanisms help maintain reliable communication across distributed metering sites.
Standard Metering Protocols
Supports IEC 62056-21 Mode C and DLMS/COSEM for communication with compatible meters and automated data collection.
Head-End System Connectivity
Supports MASS, VIKO, TeleMetriX Head-End, and MQTT/MQTTS for data communication with compatible meter data collection systems.
Flexible Interfaces for Meter Integration
Dual RS485 ports, one digital input, and one latching relay output support connectivity and integration with metering equipment.
Built-in Security Features
AES-128 encryption, ECDHE, and authentication for sensitive serial-port operations help protect metering communications and device access.
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Key Technical Specifications
Cellular 2G/4G (LTE CAT 1)Hardware Platform 2.5MB RAM; 32MB FlashMetering Protocols IEC62056-21 Mode-C; DLMS/COSEMPlatform Access MQTT/MQTTS/VIKO/MASS/TeleMetriX Head-EndInterfaces 2 × RS485; 1 × USB2.0 Type-C; 1 × digital input; 1 × relay outputPower 12V DC ± 10%; 6W (MAX)Dimensions 114 × 74.4 × 45 mmOperating Environment -30 to 70 °C; 0–93% ambient humidityProtection IP40
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Product Interfaces
Cellular 2G/4G (LTE CAT 1)USB 1 × USB2.0, Type-CSerial Port 2 × RS485; RS485: Data+, Data-, GNDSIM Card Mini SIM-2FF card, supports 1.8/3V SIM/UIM cardAntenna Connector 1 × Cellular AntennaButton 1 × System reset buttonDigital Input 1 × digital input; dry contact: Logic 0, Open; Logic 1, CloseRelay Output 1 × relay output: 240VAC/5A, latching relay
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Hardware Platform
RAM 2.5MBFLASH 32MB
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Interfaces
Cellular 2G/4G (LTE CAT 1)USB 1 × USB2.0, Type-CSerial Port 2 × RS485; RS485: Data+, Data-, GNDSIM Card Mini SIM-2FF card, supports 1.8/3V SIM/UIM cardAntenna Connector 1 × Cellular AntennaButton 1 × System reset buttonDigital I/O 1 × digital input: Dry contact: Logic 0, Open; Logic 1, Close; 1 × relay output: 240VAC/5A, Latching Relay
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Other Hardware
RTC Real time clock operated from on-board coin-cell batteryPunctuality Accuracy 0.5S / dayBattery Li-ion Battery, 300mAh, rechargeable and replaceable.
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Power
Power Supply 12V DC ± 10%Power Consumption 6W (MAX)
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Mechanical Characteristics
Mounting Plug to the modem socket of the modular metersEnclosure Material PlasticDimension 114 × 74.4 × 45 mmProtection IP40
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Ambient Temperature and Humidity
Operation Temperature -30 ~ 70℃Ambient Humidity 0–93%Declared Degree of Contamination 3Overvoltage Category CAT IIIElectrical Protection Class II
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LED
System 1 × Power, 3 × CSQ, 1 × IP, 1 × 2G/4G, 2 × RS485, 1 × Relay
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Safety & EMC
Safety & EMC IEC 62368-1; EN 55032, Class B; EN 55035, Level 2
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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
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Operating System
OS RTOS
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Internet
Access authentication APN, VPDNInternet access CHAP, PAPNetwork format 2G/4G (LTE CAT 1)eSIM Support eSIM (LPA)
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Network Protocol
IP Application ICMP, DNS, TCP/UDP, TCP Server, DHCP, NTP
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Reliability
Power Failure Alarm Detecting an external power failureLink Detection Sends heartbeat packets to detect, auto redials when disconnectedEmbedded Watchdog Device runs self-detection, auto recovers from malfunctionsTemperature Detection The CPU temperature can be detected and recorded in logs
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Communication Protocol
Acquisition Protocol IEC62056-21 Mode-C; DLMS/COSEMAccess Platform MQTT/MQTTS/VIKO/MASS/TeleMetriX Head-End
-
Security
Encryption AES-128 and ECDHEAuthentication In cases where configuration changes, software updates, or connection to the control center are made via the modem's serial ports, authentication will be performed between the modem and the device attempting to connect to it. A log will be kept for these operations.
-
Network Management
Configuration Web Via USBUpgrade Local Via USB, Remote Via FTP/InHand DM platform (Coming soon)Log Support local system log and important log power-off autosave
Datasheets
7.28.2026
1.6 MB
6.11.2026 1.6 MB 2.8.2025 859.5 KB 10.25.2024 1.1 MBFlyers
11.20.2024 7.5 MBStandard package*
- MG301-M Modular Metering Gateway *1
*Standard package contents vary by standard crder codes.
Contact us directly to learn more about our packaging options.
Specifications
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Key Technical Specifications
Cellular 2G/4G (LTE CAT 1)Hardware Platform 2.5MB RAM; 32MB FlashMetering Protocols IEC62056-21 Mode-C; DLMS/COSEMPlatform Access MQTT/MQTTS/VIKO/MASS/TeleMetriX Head-EndInterfaces 2 × RS485; 1 × USB2.0 Type-C; 1 × digital input; 1 × relay outputPower 12V DC ± 10%; 6W (MAX)Dimensions 114 × 74.4 × 45 mmOperating Environment -30 to 70 °C; 0–93% ambient humidityProtection IP40
-
Product Interfaces
Cellular 2G/4G (LTE CAT 1)USB 1 × USB2.0, Type-CSerial Port 2 × RS485; RS485: Data+, Data-, GNDSIM Card Mini SIM-2FF card, supports 1.8/3V SIM/UIM cardAntenna Connector 1 × Cellular AntennaButton 1 × System reset buttonDigital Input 1 × digital input; dry contact: Logic 0, Open; Logic 1, CloseRelay Output 1 × relay output: 240VAC/5A, latching relay
-
Hardware Platform
RAM 2.5MBFLASH 32MB
-
Interfaces
Cellular 2G/4G (LTE CAT 1)USB 1 × USB2.0, Type-CSerial Port 2 × RS485; RS485: Data+, Data-, GNDSIM Card Mini SIM-2FF card, supports 1.8/3V SIM/UIM cardAntenna Connector 1 × Cellular AntennaButton 1 × System reset buttonDigital I/O 1 × digital input: Dry contact: Logic 0, Open; Logic 1, Close; 1 × relay output: 240VAC/5A, Latching Relay
-
Other Hardware
RTC Real time clock operated from on-board coin-cell batteryPunctuality Accuracy 0.5S / dayBattery Li-ion Battery, 300mAh, rechargeable and replaceable.
-
Power
Power Supply 12V DC ± 10%Power Consumption 6W (MAX)
-
Mechanical Characteristics
Mounting Plug to the modem socket of the modular metersEnclosure Material PlasticDimension 114 × 74.4 × 45 mmProtection IP40
-
Ambient Temperature and Humidity
Operation Temperature -30 ~ 70℃Ambient Humidity 0–93%Declared Degree of Contamination 3Overvoltage Category CAT IIIElectrical Protection Class II
-
LED
System 1 × Power, 3 × CSQ, 1 × IP, 1 × 2G/4G, 2 × RS485, 1 × Relay
-
Safety & EMC
Safety & EMC IEC 62368-1; EN 55032, Class B; EN 55035, Level 2
-
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 RTOS
-
Internet
Access authentication APN, VPDNInternet access CHAP, PAPNetwork format 2G/4G (LTE CAT 1)eSIM Support eSIM (LPA)
-
Network Protocol
IP Application ICMP, DNS, TCP/UDP, TCP Server, DHCP, NTP
-
Reliability
Power Failure Alarm Detecting an external power failureLink Detection Sends heartbeat packets to detect, auto redials when disconnectedEmbedded Watchdog Device runs self-detection, auto recovers from malfunctionsTemperature Detection The CPU temperature can be detected and recorded in logs
-
Communication Protocol
Acquisition Protocol IEC62056-21 Mode-C; DLMS/COSEMAccess Platform MQTT/MQTTS/VIKO/MASS/TeleMetriX Head-End
-
Security
Encryption AES-128 and ECDHEAuthentication In cases where configuration changes, software updates, or connection to the control center are made via the modem's serial ports, authentication will be performed between the modem and the device attempting to connect to it. A log will be kept for these operations.
-
Network Management
Configuration Web Via USBUpgrade Local Via USB, Remote Via FTP/InHand DM platform (Coming soon)Log Support local system log and important log power-off autosave
Downloads
Datasheets
7.28.2026 1.6 MB 6.11.2026 1.6 MB 2.8.2025 859.5 KB 10.25.2024 1.1 MBFlyers
11.20.2024 7.5 MB
Ordering
Standard package*
- MG301-M Modular Metering Gateway *1
*Standard package contents vary by standard crder codes.
Contact us directly to learn more about our packaging options.
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Learn More →Frequently Asked Questions
What is MG301-M designed for?
MG301-M is a modular cellular modem designed for automated meter reading applications. It connects compatible modular meters to head-end systems over cellular networks, enabling remote meter data collection and monitoring.
How is MG301-M different from MG301?
MG301-M is designed to plug directly into the modem socket of compatible modular meters, while MG301 is a standalone metering gateway. The two products also differ in their interfaces, power requirements, and supported protocols.
What metering protocols does MG301-M support?
MG301-M supports IEC 62056-21 Mode C and DLMS/COSEM, enabling communication with meters that use these protocols.
What communication networks does MG301-M support?
MG301-M supports 2G and 4G LTE Cat.1 cellular connectivity. It also features automatic link detection, reconnection, and watchdog mechanisms to improve communication reliability.