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Lampe simple Source google image: https://ae01.alicdn.com/kf/HTB1PsPJXbSYBuNjSspfq6AZCpXaI/LED-Desk-lamp-USB-Table-Lamp-Simple-Folding-Rechargeable-18-LEDs-Lampe-de-Table-LED-Light.jpg_640x640.jpg

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Interrupteur double allumage niko Source google image: https://www.hubo.be/fr/aide-et-conseils/electricite/installer-un-interrupteur/_jcr_content/par-page-content/hb_columns_1_6/par1/hb_columns_2_0/par1/hb_adaptive_image.img.full.high.jpg/1534861880753.jpg

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Lampe simple allumage Source google image: https://4.bp.blogspot.com/-IqN-4UVsEY0/WDHQPLgE3fI/AAAAAAAAAXk/M3IKSY3MOJMoBBQekcCCZNZ3m_0ISbdLgCEw/s1600/double%2Balumage.jpg