In today’s fast-paced technological world, the Internet of Things (IoT) has emerged as a critical part of our daily lives, enabling the connection and interaction of devices across various domains such as smart homes, healthcare, agriculture, and industrial automation. While the benefits of IoT are undeniable, one of the key challenges lies in ensuring reliable communication between IoT devices, especially in environments with obstacles or large distances between devices. This is where IoT communication relay modules come into play. These modules provide a vital solution to the challenges posed by signal interference, range limitations, and network congestion, ensuring the smooth and effective operation of IoT systems.