Door sensors are devices designed to detect when a door is opened or closed. They typically consist of two main components: a magnet and a sensor. When the door is closed, the magnet and sensor are aligned, allowing the system to recognize that the door is secure. When the door opens, the magnet moves away from the sensor, triggering an alert or notification. These sensors are commonly used in security systems to enhance safety in homes and businesses. They can be connected to alarms or smart home systems, allowing users to monitor their property remotely. Smart Home Systems and Security Alarms often integrate door sensors for added convenience.