DTU (Data Transfer Unit) is a general product designation used for the MK-I and MK-II series in customer application scenarios such as elevator control systems. In these deployments, the DTU serves as a communication bridge between on-site equipment and a centralized management platform, enabling reliable data exchange over cellular or wired networks.

More broadly, DTUs are versatile industrial IoT gateways designed for environments where remote equipment must communicate with a central system in real time. They collect, convert, and transmit field data from devices such as controllers, sensors, and PLCs, ensuring seamless integration with cloud or backend servers.

Because of this capability, DTUs play a critical role in industries that depend on remote monitoring, automation, and real-time data acquisition. Typical applications include elevators, smart utilities, industrial machinery, and infrastructure systems—anywhere operational visibility, remote diagnostics, and continuous data reporting are required to improve efficiency, safety, and system responsiveness.