> NB-loT/CAT-Ml(eMTC) network optional > Wide Coverage Area > Numerous and Powerful Nodes Connections > Flexible and practical data communications > Friendly configuration tool > WUNK Modem Management Platform > Wide operating temperature range: -30 to 75°C Narrow Band-Internet of Things (NB-IoT) is a standards-based low power wide area (LPWA) technology developed to enable a wide range of new IoT devices and services. NB-IoT uses a subset of the LTE standard, but limits the bandwidth to a single narrow-band of 200kHz. NB-IoT focuses specifically on indoor coverage, low cost, long battery life, and high connection density, significantly improves the power consumption of user devices, system capacity and spectrum efficiency, especially in deep coverage. Battery life of more than 10 years can be supported for a wide range of use cases. WLINK rugged D83 serial port to IP modem is a NB-IoT/CAT-M1(eMTC) modem have been developed especially for IoT/M2M application. It provides RS232/RS-485 interface and equipped with PPP, UDP and CoAP protocol, it could convert the user data into LTE NB-IoT/CAT-M1 network and transmits the data to the customer's data service center through complete transparent data channel, allows a simple and rapid integration of cellular network connectivity into IoT/M2M application. D83 series modem is a unique compact hardware and low power consumption designs, making it an ideal solution for a variety of industrial automation and monitoring applications including smart water/oil/gas, Power, Environment Protection, Water Conservancy and Lighting control monitoring etc. • Integrated NB-IoT/CAT-M1(eMTC ) • Standard PPP, UDP and Coap protocol communication • RS232/RS485 optional for data communication Web: www.wlink-tech.com Add: 318-319 Yiben building, Chaguang Road, Nanshan District, Shenzen, China Tel: 86-755-86089513 Email: [email protected] Shenzhen Wlink Technology Co., Limited

H | 9 I Shenzhen W'link Technology Co., LTD • Support APN and VPDN private network • Support transparent data transmission • Support data service center with dynamic IP address • Support LED status indication• Wide range voltage input • Smart power management • External power on/off control • Reliable, flexible and easy to deploy Multiple operation modes Flexible and utilitarian data communications Parameters configuration and remote management Specification Always online, automatically connect to NB-IoT/CAT M when powered on Off-line when idle, online mode will be triggered by user data/ring...

Typical Diagram Package Contents: D83 Unit 1x 12VDC Power Supply Adaptor 1x RS-232 connection Cable 1x LTE antenna Web: www.wlink-tech.com Add: 318-319 Yiben building, Chaguang Road, Nanshan District, Shenzen, China Tel: 86-755-86089513 Email: [email protected] Shenzhen Wlink Technology Co., Limited