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Energy-saving street lighting (ESSL) system is one of the promising approach to support smart city in the future. The technology that evolves with the advance in low energy microcontroller and wireless communication has become the foundation in the development of ESSL system. This paper presents initial development for ESSL system focusing on the Malaysia environment. The system utilizing Waspmote as a main part of sensor node, zigbee for communication and PIR sensor for motion detection. Deployment of sensor node at real environment also been discussed in this initial develompent. The sensor node can be used to control the brightness of the street light and the developed system found to save energy through the switching method of street light.