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1. Before using the switching power supply, you need to determine the specifications of the input and output voltage to see if it is consistent with the value of the power supply.

2. When installing, check whether the installation is firm, switching power supply，whether there is contact between the screws and the power board, and also check the insulation resistance to prevent the risk of electric shock.

3. In order to ensure the safety of use, the switching power supply also needs to be connected to the ground wire, which can reduce interference and make it safer to use.

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