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Amazon.com: Onite Male to Male Extension Cord, DC 5.5x2.1mm Power Adapter Cable, for LED Strip, Surveillance Camera, CCTV Security Camera, LED Display, IP Camera, DVR, Router, Invoice Printer, 2-Pack : Electronics
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DC Power Adapter 2.5x5.5 mm Male Terminal Block 2 pin - Electrical connectors - Power Cables - Cables and Sockets
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Male DC Barrel Power Plug Screwless Quick Wire Connector 5.5mm x 2.1mm for 12V/24V LED Strip and Electronics - $0.49 - JacobsParts Inc
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Amazon.com: DAYKIT 10 Pairs 12V Male+Female 2.1x5.5MM DC Power Jack Plug Adapter Barrel Connector for CCTV Security Camera Led Strip : Electronics
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GOSONO 10Pcs/lot Male DC Power Plug Connector 2.5mm x 5.5mm/2.1x5.5 (Screw Fastening Type) Needn't Welding DC Plug Adapter (10Pcs/lot Male 2.5x5.5mm, Green) - Amazon.com
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SPT DC Power Cable Male Plug Pigtail for CCTV Camera (100-Piece per Pack) 93-PM11-100 - The Home Depot
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Male DC Power adapter - 2.1mm plug to screw terminal block : ID 369 : $2.00 : Adafruit Industries, Unique & fun DIY electronics and kits
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