This project defines a standardized system design for a smart sensor interface using the Narrow-band Internet-of-Things (NB-IoT) Band protocol. A NB-IoT system includes end devices, gateways, network servers and application servers. The standard defines the design and specifications of smart sensor interface adopting the NB-IoT protocol to achieve sensor data plug-and-play based on the IEEE 1451.0 transducer services, secure, and private performance of NB-IoT systems. The standard also includes the wireless transducer interface module (WTIM) (end devices), network capable application processor (NCAP) (gateway device, or 1451 server), and application (1451 client), and appropriate transducer electronic data sheet (TEDS). In essence, this standard defines the Application Programming Interfaces (APIs) between WTIM and NCAP (1451 server), secure wireless communication between WTIM and NCAP. This standard provides a guidance to improve the data accuracy, interoperability, security, data privacy and quality-of-services (QoS).