Ключевые слова: alternative, anonymous, app, application, automation, blurred background, body part, cellphone, check, clean, connection, conserve, control, crop, device, eco, eco friendly, ecology, electric, energy, engineer, engineering, equipment, faceless, from above, gadget, hand, high angle, male, man, mobile, monitor, monitoring, panel, photovoltaic, power, protect, renewal, resource, reuse, smart, smartphone, solar, sustainable, system, technician, technology, unrecognizable, using, wireless,