1、Applicable Voltage: The power supply box has a 12V working voltage and 220V input voltage. Please confirm the voltage and use the power box with the correct voltage to avoid accidental damage. 2、General Protection: The switch box has long service time, when problem occurs, only affect the independent output, other outputs still working, ensuring uninterrupted power supply to the entrance guard system. 3、Durable Material: The security power box is made of solid and rugged metal material, wear resistant and durable, ensuring perfect performance, having a long service time. 4、Various Use: The power supply distribution box is suitable for various kinds of entrance guard electronic locks, universal for long time power supply. 5、Easy to Install: The distributed power supply box has a simple installation, convenient and time saving, having compact appearance, don't need too much tools or complicated steps.