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Flat icons set of smart house technology system with centralized control of lighting, heating, ventilation and air conditioning, energy savings. Flat design style modern vector illustration concept.
lightbulbs on blue background, idea concept
Energy efficiency concept. Different icons on green background
Energy efficiency score graph with office equipment on desk in the planning meeting calculates the home-office energy saving rate. Energy level Ecological and biological home. Energy level concept.
lightbulbs on blue background, idea concept

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