Alarms; fire extinguishing apparatus; fire alarms; chargers for electric batteries; collectors, electric; switchboxes [electricity]; electrical transducers; sonars; loudspeakers; record players; distribution boards [electricity]; distribution consoles [electricity]; audio- and video-receivers; radios; holograms; inverters [electricity]; accumulators, electric; batteries, electric; lightning conductors; television receivers; photovoltaic cells; solar cells; monitors [computer hardware]; mouse ...