ajtókapcsoló

An ajtókapcsoló, often translated as door contact or magnetic switch, is a simple yet effective security device used to detect whether a door or window is open or closed. It typically consists of two parts: a magnet and a reed switch. The magnet is mounted on the moving part of the door or window, while the reed switch is attached to the frame. When the door or window is closed, the magnet is in close proximity to the reed switch, completing an electrical circuit. If the door or window is opened, the magnet moves away, breaking the circuit.

This interruption or completion of the circuit can be used to trigger various actions. In a security system, it can signal an alarm if a door is opened unexpectedly. It can also be integrated into smart home systems to automate other devices. For instance, an ajtókapcsoló could turn on lights when a door is opened or turn off a heating or cooling system when a window is opened to save energy.

Installation is generally straightforward, requiring minimal wiring. The magnetic contact principle makes them reliable and durable with no moving parts to wear out. They are a fundamental component in many burglar alarm systems and are also used in applications beyond security, such as controlling elevators, monitoring industrial equipment, or even in simple notification systems. The sensitivity of the reed switch can be adjusted in some models to ensure proper operation within a specific range.