The lack of wireless spectrum in the radio frequency bands has led to a rapid growth in research in wireless networking using light, known as Li-Fi (light fidelity). In this paper an overview of the subsystems, challenges and techniques required to achieve this is presented. Overall design framework of the system was introduced and analyzed in detail, which contained realization of hardware design. The wireless light control system was established based on CC2430-chip of Texas Instruments (TI). In this paper, we achieved designing Printed Circuit Board (PCB) for sensor nodes as end device and coordinator and also wrote C codes in IAR embedded workbench development tool to form wireless network. Test results of system show that lights on end device or router in wireless sensor networks (WSN) can be controlled by another switch on coordinator, which achieved remotely wireless intelligence light control.