This device is a portable power station (outdoor power supply) of the PurMars brand. The functions of each interface on it are as follows:

1. Top interface:
DC Out (12V 6A): DC output interface, providing 12V voltage and a maximum current of 6A (72W power), usually used to connect car devices, small DC appliances, etc.
2. Middle interfaces (from left to right):
AC: AC output switch (this button needs to be pressed first to enable the AC socket of the device, which generally outputs 220V household voltage).
OUT/18W: USB-A interface, supporting a maximum output of 18W (for charging small-power devices such as mobile phones and tablets).
OUT/30W: Type-C interface, supporting a maximum output of 30W (for fast charging mobile phones, tablets, and other devices).
IN/OUT 60W: Type-C interface, with dual functions - it can be used as an input (to charge this power station, supporting a maximum 60W fast charging) and as an output (to power devices, with a maximum power of 60W).
