Access control systems are used to grant authorization to persons/vehicles, thereby providing restricted access in and out of a concerned place.

These systems are highly advantageous compared to the conventional locking and monitoring systems. The traditional practice was generally to maintain a register wherein entries would be made manually.

Access control systems provide high security and also help in having a check on the punctuality of people. These systems find a wide range of applications including schools, industries, parking lots, construction sites and hospitals.

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Most of these systems have facilities to scan the thumb impression or the retina of the eyes of the people entering or leaving. Malpractice can be greatly cut down by the use of these systems. Commercial Access Control Systems – Ryalex Security Pty Ltd offers competitive prices with great service.

A typical access control system consists of a switched mode power supply (SMPS), a battery, relay, sensor and an exit button, which is a simple push button.

The sensor can be a card reader, bar code reader, scanner or a touch screen where information about the person entering can be read digitally.

The wire from the door which is the access gate is connected to a relay. This relay is a simple electrically operated switch, which is the best suited since it is a low power switch.

The switch closes when the fed information has been sensed and a command will be issued to the door lock system to automatically open the door, provided the scanned information matches with the available/authenticated data.