The primary components of a smart home system include smart devices, a central hub or controller, and a secure network connection. Smart devices range from smart thermostats and lighting to security cameras and appliances, allowing users to automate and monitor their home environment. The central hub acts as the brain of the system, coordinating communication between various devices. A reliable network connection is crucial for enabling remote access and control through mobile apps or voice assistants, enhancing convenience and energy efficiency for homeowners while ensuring security features are in place.