What is the fine-grained topic of the following text: (FW) a subsidiary of Novatel Wireless, Inc. (Nasdaq:MiFi) is an IoT products, systems integration and services company that specializes in fixed and mobile cellular-based wireless IoT solutions with a focus on product innovation, speed to market, and rapid commercialization of new connected devices. Only return the topic.
Novatel Wireless subsidiary's specialization in IoT products and solutions.