Power Line Communication (PLC) technology transmits data through electrical wiring, featuring a "network wherever there is electricity" capability, eliminating the need for additional cabling and overcoming the limitations of wireless signal interference. Compared to wireless ZigBee, PLC offers superior communication stability and coverage in complex environments, providing consistent connectivity from basements to backyards while avoiding interference from other wireless devices. Furthermore, the physical connection characteristic of PLC enhances security, making it difficult for unauthorized parties to intercept, thereby offering higher levels of privacy protection and reliability for smart home systems.