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1pcs 9v 1a dc power adapter eu 5.5mm*2.1mm interface Power Supply 100-240v ac adapter for arduino UNO MEGA - AliExpress
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Amazon.com: 9V 1A AC DC 100V-240V Power Supply Adapter Cord for Arduino UNO R3 MEGA, US Plug - Center Positive 5.5x2.1~2.5mm : Electronics
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TKDY 9V 1.5A Power Supply Charger Cord, 110-240Vac to DC 9Vlot 1A AC Adapter DC Plug Center Positive, for Arduino UNO R3, Schwinn Bike A10 140 170, Crosley Cruiser Record Player,LED Strip
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Electronics-Salon DIN Rail Mount Screw Terminal Block Adapter Module, for Arduino UNO R3.: Amazon.com: Industrial & Scientific
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