The IRM-01-12 is a type of MeanWell switching power supply. It is an industrial grade enclosed AC/DC power supply that is rated for input voltage of 85-264VAC, and can output 12VDC at up to 1A. It features high efficiency, low ripple, and is protected against over-voltage, over-current, and over-temperature. This type of power supply is typically used in industrial applications including light fixtures and security systems.