Narrowband Internet of Things (NB-IoT) is a standards-based, low-power wide-area (LPWA) technology designed to support a wide range of IoT devices and services ( it is named Cellular modem or DTU as well). Built on a subset of the LTE standard, NB-IoT operates within a narrow bandwidth of 200kHz, optimizing it for efficient, low-power connectivity.

WLINK D83 is a rugged, industrial-class NB-IoT/ LTE CAT 1 (eMTC) modem designed specifically for IoT and M2M applications. Equipped with RS232/RS-485 interfaces and supporting PPP, UDP, and CoAP protocols, it seamlessly converts user data into LTE NB-IoT/CAT-M1 network signals and transmits it to your data center through a fully transparent data channel.

This robust modem enables simple, rapid integration of cellular connectivity into IoT/M2M systems, making it ideal for industrial automation, remote monitoring, and smart infrastructure deployments.

D83 Series modems feature a unique compact design and ultra-low power consumption, making them an ideal solution for a wide range of industrial automation and monitoring applications. These include:

Smart water, oil, gas monitoring, Power systems, Environmental protection, Water conservancy, Lighting control and monitoring

Basic Features

Connectivity & Communication

• Integrated NB-IoT/ LTE CAT 1 (eMTC) communication

• Supports APN and VPDN private networks

• Enables transparent data transmission

• Compatible with data service centers using dynamic IP addresses

• Standard protocols: PPP, UDP, and CoAP

Hardware Design

• Optimized EMC design for industrial environments

• Optional RS232/RS485 interfaces for versatile data communication

• LED status indicators for real-time monitoring

Power Management

• Wide-range voltage input for flexible power options

• Smart power management with external on/off control

Deployment & Reliability

• Reliable, flexible, and easy to deploy in diverse environments

Enhanced Features

Multiple operation mode

• Always online: automatically attaches NB-IoT/Cat-M1 when powered on

• automatically redials when off line and keep line alive

• Offline when idle and trigged online by user data, ring or SMS

• GPRS channel and SMS mutual backup

• Online/offline control by commands via user equipment

• Data loop test

• Supports UDP and CoaP

Multiple data service centers communications

• Supports up to 4 data service centers communications

• Supports main/backup data service centers communications

• Supports customized setting for each data service center

Flexible and utilitarian data communications

• Supports TCP/IP, UDP/IP, DDPTM, SMS and AT

• Self-defines transparent or protocol communications

• Self-defines customized data frame separator

• Self-defines reconnecting interval

• Self-defines heart-beat data frame

Parameters configuration and remote management

• Built-in parameters configuration menu

• Configuration tool based on PC

• Remote parameters configuration via data service center

• Remote parameters configuration by SMS

• Parameters configuration via AT+ commands

  
  

Typical Application

Product Structure