electric door bells; ethernet adapters; antennas; aerials; junction boxes [electricity]; connections for electric lines; transmitters of electronic signals; spools [photography]; audio- and video-receivers; data processing apparatus; semiconductors; acoustic couplers; printed circuit boards; neural helmets, not for medical purposes; holographic projection apparatus; ethernet cables; high definition multimedia interface cables; cable television converters; cable jump leads; materials for electricity mains [wires, cables]; electrical cables