9 Flexible wiring systems and components, namely, flexible branch integrated circuits, electric attachment plugs, electrical outlets, electric jacks, electric sockets, electrical connectors, and lamp set components; emergency lighting unit inverters; computers for the control of building lighting; electric lighter dimmers; dimming unit comprising cabinets, control panel and electrical wires for control of electric lighting fixtures and other electric loads; electronic sensing devices, namely, electronic ultrasonic occupancy sensors and range extenders for lighting energy management; lighting control systems comprising an electric low voltage switching relay; computer software for use in the ordering and sale of electric lighting fixtures and for the design and specification of lighting systems; interactive computer software for use in calculating lighting specification, for lighting design, for tracking job identification, pricing, quotation, order entry and status information, and for electronic messaging; computer software used by lighting engineers for designing and calculating the specifications of lighting systems; and computer software for use in tracking order status, inventory status, quotation of orders, will-call orders and lighting calculations; battery-powered emergency warning lights