Industrial IoT (IIoT) is the interconnected, intelligent, and automated factory setup for improving efficiency and manufacturing processes, which is considered one of the key technologies of Industry 4.0. This study aims to identify the challenges for the implementation of IIoT in the Bangladeshi electronics manufacturing industry and to find the relative importance of the challenges by using the BWM. The challenges were determined from the literature review and with the help of industry experts. By using the BWM, the optimal weight value of the challenges was determined. This research may aid companies through providing guidelines, and industrial managers may be able to obtain a list of challenges ranked by importance when implementing IIoT technology. The industrial manager can also assess and investigate the impacts of these challenges. This IIoT technology can be implemented in different sector. This IIoT technology can be implemented in different sector. This research is conducted on the electronics manufacturing industry of Bangladesh. The optimal average weight value was determined for the challenges. The relative importance of the challenges was determined according to their importance. From the output result, it was clear that the most important challenge for implementing the IIoT technology for the Bangladeshi electronics manufacturing industry was "Estimating ROI" which had the highest average weight value.