Industrial IoT systems rely heavily on wireless communication, yet security and regulatory compliance are often addressed separately during system development. This paper examines how wireless infrastructure security can be integrated with electromagnetic compatibility (EMC) and radio frequency (RF) regulatory requirements at the design stage. It analyzes common wireless attack vectors in industrial settings, including jamming, spoofing, and protocol exploitation, and evaluates how regulatory constraints influence hardware and network architecture decisions. A security centered device architecture is proposed where RF shielding, grounding schemes, spectrum allocation, and firmware isolation are treated as interconnected design elements. The framework incorporates zero trust communication principles within industrial wireless networks while maintaining compliance with EMC standards such as IEC 61000 and relevant RF certification requirements. The study demonstrates that early coordination between cybersecurity engineering and compliance engineering reduces redesign cycles and certification delays. The proposed model offers a structured pathway for building industrial wireless systems that meet both security and regulatory obligations without post development modifications.