Industrial Cellular Modems D20 Series

D20 Series Modem is a type of industrial cellular Modem (also called DTU, IP Modem), which adopts high-powered industrial 32-bits CPU, with multi-layer software detection and hardware protection mechanism to ensure reliability and stability of the device. It supports worldwide carrier 4G/3G/2G cellular network, including FDD-LTE, TDD-LTE, and WCDMA, EVDO, TD-SCDMA, EDGE, CDMA 1X and GPRS. It has serial port RS232 and RS485.

D20 Series Cellular Modem helps users to quickly access the Internet, to ensure secure and reliable data transmission. It’s ideal for IoT (Internet of Things) and M2M (Machine to Machine) applications, and has been widely used in many applications, such as Intelligent Transportation, Oil and Gas, Smart Grid, Vending Machine, Agricultural Irrigation, Environmental Protection, Industrial Automation, Energy Saving, Smart Home, etc.

  • Rich Industrial interfaces, 1x RS232, 1x RS485
  • Modbus RTU, MQTT*, TCP/UDP protocol supported
  • Transparent data transfer, with built in standard TCP/IP stack
  • Multi data centers (up to 5) and TCP server, able to access center with domain name and IP address
  • SMS backup, data will be transferred by SMS when TCP/UDP disconnects
  • TCP heartbeat link detection, keep device always online
  • Hardware and software auto inspection technology, enable operation fault auto repairing
  • AT Command, CSD*
  • Can be configured as an SMS Modem