Abstract. This paper describes the design of a new system architecture for monitoring and controlling purposes of a group of sensors and actuators within a wireless sensor network (WSN). This system can manage an undefined amount of clustered networks. The proposed system architecture enables Internet communications to reach the WSN in a highly efficient way. This structure reduces the bottleneck of the Internet/WSN bridge and the amount of messages inside the WSN when an Internet request arrives. Besides, each individual WSN implements an Intelligent Rule-Based System Automation (IRBSA) that performs the automation of the behaviour of the network motes according to the previously included rules. These rules describe the actions that are executed when all the conditions of that rule are met. Opposite to traditional approaches, IRBSA is placed in the WSN Header Mote rather than in the Internet server or in every mote.