Features: Brand new and high quality Seamless Global Connectivity This expansion board supports NB IoT communication across different regions, enabling reliable and secure remote communication and data transfer worldwide. Reliable Communication Equipped with the high performance SIM7028 module, this expansion board ensures stable and secure communication, guaranteeing the safety and reliability of data transmission. Engineers and Developers Designed for professionals in the field of IoT development, this expansion board provides a reliable and stable communication module, facilitating the implementation and testing of IoT applications. Versatile Applications From logistics and warehousing to urban infrastructure monitoring, this expansion board can be integrated into various devices such as sensors and monitoring equipment, enabling remote monitoring and management of goods and facilities. Simplified Integration With its user friendly design and easy to use software development kit (SDK), this expansion board simplifies the integration process and reduces the learning curve for IoT device manufacturers and developers. Specifications: Power Supply Voltage: 5V Logic Level: 5V/3.3V (default: 3.3V) Total Power Consumption (Idle Mode): 4mA Module Power Consumption (VBAT=3.3V): Idle Mode: 2.8mA PSM Mode: 0.8uA DRX Mode Current: 0.11mA @ Idle (DRX=2.56s) eDRX Mode Current: 0.018mA @ Idle (eDRX=163.84s; PTW=25.6s) Package Includes: 1 x NB-IoT Expansion Board 1 x Antenna note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!