Cellular Modems

The InDTU series industrial cellular modem features fast networking, flexible scalability, quick construction and low costs. It provides industrial users with wireless data transmission channels over TCP/IP on 5G/4G/3G/2G/NB-IoT/Cat1 networks, enabling communications between on-site serial devices and central control systems, facilitating remote data acquisition and equipment control. It is widely applied in power, industrial automation, transportation, water management, agriculture, environmental protection, and meteorology.

 / Industrial Cellular Modems

Cellular network access, available with 4G/3G/2G

The InDTU is available with 4G, 3G and 2G networks and automatic backward compatibility. Adaptable to global major carriers, it offers a wide range of network and service options for customers to choose.

Industrial-grade design, quality ensured

With millions of devices deployed in various power and industry fields, our products demonstrate high reliability and flawless operation.

  • All industrial-grade chip
  • Working temperature: -40℃~75℃
  • Wide voltage range for power supply

High reliability, always online

  • Self-healing capabilities with software and hardware watchdog technologies
  • Link redundancy, mutual backup between network and SMS channels
  • Supports multiple-level link detection mechanisms, including PPP layer heartbeat, ICMP probing, TCP Keepalive, and application layer heartbeat, “always online”

Flexible configuration, easy management

  • Local configuration
  • RTOOL remote configuration
  • SMS configuration
  • Batch management via the platform
  • Configuration import/export with one click

Multiple protocols supported, smart interconnectivity

  • Transparent TCP/UDP protocol
  • InHand DC protocol
  • Serial port 55AA protocol
  • Supports 1-5 data centers
  • Supports NAT technology

Key Parameters

SystemCPUARM Cortex-M3 108MHz
Serial2*Logic serial ports:
Serial port 1: RS-232/RS-485 (Optional)
Serial port 2: RS-232
CellularLTE CAT4/CAT M1/NB
SIM Card1*SIM, Mini-SIM(2FF)
Network ProtocolNetwork ProtocolPing, DNS, transparent TCP/UDP, InHand DC TCP/DC UDP, user-defined login/heartbeat data packet
Network ManagementConfiguration MethodLocal serial port, RTool, InHand Device Manager, SMS
Ambient Temperature and HumidityAmbient Humidity5 ~ 95% (non- condensing)
Storage Temperature-40 ~ 85℃
Working Temperature-40 ~ 70℃
Power SupplyPower InputDC5-35V
Power InterfacePluggable industrial terminal connection
Consumption (@12V)47mA
Mechanical PropertiesInstallationWall-mounting
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The InDTU324 offers LTE CAT-M1 or NB-IoT connectivity for metering applications that feature low-volume, infrequent data but require secure and reliable transmission.

The InDTU industrial cellular modem provides reliable M2M connectivity to enable intelligent lighting system. The wireless solution allows government and utilities to remotely monitor outdoor lights, make illumination adjustments and finally reduce power consumption.