Final answer:
Installation of magnetic contacts on a steel door requires attention to prevent magnetic interference, ensure alignment, and protect from rust and corrosion for long-term reliability.
Step-by-step explanation:
When installing magnetic contacts on a steel door, certain considerations are necessary to ensure proper operation. Because steel is a magnetic material, it can impact the magnetic field of the contact which is designed to detect the opening of a door. A major concern is magnetic interference; the steel may either weaken the magnetic field, causing a lack of sensitivity, or create a strong field that prevents the contact from detecting when the door is opened.
Furthermore, the potential for rust and corrosion on the steel door could affect the long-term reliability of the magnetic contact. Proper sealing and protective measures need to be taken to maintain functionality over time. Lastly, the alignment and positioning are crucial because if the magnets are not aligned accurately relative to the contact points, the system may fail to work correctly.