9 Smart internet of things (IoT) electric controllers used in lighting, air-conditioning, ceiling fans, power sockets, and electrical and electronic devices; smart internet of things (IoT) electronic proximity and temperature sensors for measuring occupancy, daylight, environment data, and human comfort; Artificial intelligence (AI) edge cameras; wireless gateway routers; edge computing modules in the nature of central processing units; downloadable computer smart data platform for hosting centralized data lakes and performing statistical analysis