31V 0.5A AC Switching Power Adapter with Rj11 DC Connector Under ETL/FCC/CE/UL Certification - China Power Adapter and Switching Power Adapter
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AC Adapter HP 0957-2142 - 0957-2142 - 31V 2.42A 75W
Amazon.com: 31V 2A 62W AC/DC Power Supply Adapter Transformer Interface 5.5x2.5mm Suitable for Security Equipment LCD LED Lighting Communications Equipment Digital Products UL and FCC Approved with Power Cord : Electronics