Magnetic switches are devices that use a magnetic field to open or close an electrical circuit. They typically consist of a magnet and a switch, which can be activated when the magnet is brought close to the switch. This type of switch is commonly used in security systems, door sensors, and various automation applications. These switches are known for their reliability and durability, as they have no moving parts that can wear out. They can be found in many everyday items, such as home security systems, refrigerators, and automated lighting, making them a versatile choice for controlling electrical devices.