The HLN-40H-12A is a 40W, 12V DC enclosed switching power supply from Mean Well. It has an input voltage of 90~264V AC, a no-load power consumption of less than 0.3W, and it is built with over-voltage, over-load, and short-circuit protections. Its operating temperature ranges from -30 to +50°C. Its compact size makes it suitable for a wide range of applications.