1. Check Voltage Please find the spec label of your device and check the working voltage. It should be 9V DC, not be AC 9V or lower/higher than 9V DC. Otherwise, your device will not work or be damaged.
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2. Check Current Check the max current your device will draw. It should be equal to or less than1A, such as 360mA 500mA 800mA. Otherwise, your device won’t work well and the PS will be damaged very soon.
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3. Check Plugs Check the power input port of your device. Its outer diameter should be 5.5mm; inner core diameter should be 2.5mm. Inner core polarity should be"+", exterior polarity should be" - ".
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4. Check Original PS If you have a original power supply for reference, their output voltage, plug size, polarity should be the same . If our PS’s current is equal to or higher than original one’s, then our PS will work with your device.
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