custom original design manufacturing of electronic devices in the internet of things (IoT), not including custom fabrication of metal parts

Audio cables; Cable connectors;Cable television converters; Computer cables; Computer network adapters, switches, routers and hubs; Computers and computer peripherals; Connection cables; Converters; Digital to analogue converters; Electric connections and connectors; Electronic equipment, namely, transformers, baluns, and cables, all used in connection with computers, computer peripheral devices, televisions, audio-video equipment, closed-circuit TV equipment and telecommunication equipment; ...