Description: The Zigbee Cluster Library (ZCL) is a fundamental standard that defines clusters of devices in Zigbee networks, facilitating interoperability among different devices and manufacturers. Zigbee is a communication protocol designed for low-power applications and personal area networks, especially in the realm of home automation and the Internet of Things (IoT). The ZCL provides a structured framework that allows devices to communicate effectively, specifying how they should exchange information and what commands they can execute. Each cluster in the ZCL represents a set of related functionalities, such as lighting control, temperature management, or security. This enables devices from different manufacturers that implement the same ZCL to work together seamlessly. The ZCL also includes definitions of attributes, which are characteristics of devices, and commands, which are actions that devices can perform. This standardization is crucial for the development of ecosystems of smart devices, as it ensures that users can integrate and control multiple devices easily and efficiently, without worrying about compatibility between brands. In summary, the Zigbee Cluster Library is an essential component that drives connectivity and functionality in the world of Zigbee networks.