12V 300mA power adapters are compact and low-power units designed to provide 12 volts at 300 milliamps of direct current. They are ideal for small electronic devices that require minimal power and a steady voltage output. Thanks to their lightweight and space-saving design, these power supplies are often used in applications such as sensors, small audio devices, and low-power control circuits. Their reliability and efficiency make them suitable for projects and systems where precise, low-current power delivery is essential.