The basic component of wireless sensor networks is sensor node, and it is one of the most investigated complex issues in wireless sensor networks. Within this investigation concept, one of the major topics focused on wireless sensor networks is designing sensor node equipment. In this study, a new wireless sensor node design was proposed. In this design, a low-power PIC and a low-power transceiver-receiver device were used. In order to connect various sensors to the node, an expansion slot was designed. The software that runs on the microcontroller was written in the PIC-C language, and it could be adapted for different routing algorithms and sensor types. So this paper presents an alternative low cost and low powered sensor node design and implementation for usage of the researchers and practitioners.