prov:value
| - In embodiments, household devices such as fuse boxes, electrical heating systems, controllers, switches, thermostats, emergency switches, intercoms, light controls, security systems, security controls, appliances, lights, cabinets, cabinet lighting, windows, doors, walls, ceilings, floors, counters, tools, rheostats and other surfaces may have photovoltaic cells 4504 (e.g. disposed as a film or sk
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