This is an open-frame switching power supply with part number 5T164A194-02, manufactured by Mean Well. It accepts a wide-range AC input of 100-220V and provides a stable 24V DC output. Featuring a built-in heatsink, EMI filtering, and reliable Mean Well circuit design, this power supply is widely used as an internal power module for marine equipment, industrial control systems, and automation devices, ensuring stable and efficient power conversion.