Product Usage Instructions: 1, Select a correct adapter tip for your device, this product tip is 5., 5mm x 2., 1mm, 5., 5mm x 2., 5mm, 3., 5mm x 1., 35mm 2, Check the input voltage (24V) and Current (Not more than 1., 5A) of your device. AC 100V-240V DC 23V 500mA Switching Power Supply Adapter 0.5A Plug 5.5mm 5.5mm X 2.1mm Power Adapter Security-01 AC To DC 24V 1.5A Power Supply, Plug UK 5.5 X 2.1 With Selectable 5.5 X 2.5 5.5x2.1mm Power Adapter Discover 5.5 x 2.1mm DC plug connectors with CE certification, ideal for LED lights and power adapters. Waterproof IP67 rated, copper conductor for reliable... Safety: UKCA WEEE RoHS certificate, Over-Voltage protection, Over-Current protection, Short Circuit protection Security-01 DC 24V 1A Power Supply Adapter, Plug 5.5 mm x 2.1 mm with Selectable 5.5 mm x 2.5 mm, 3.5 mm x 1.35 mm Plug Tips Input Voltage: AC 110-240V 50-60Hz Output: 24V DC 1., 5A., DC Connector Size: 5., 5mm x 2., 1mm., DC Line Length: 1., 5m.