Standalone systems are the simplest of access control systems. They provide limited access control at a minimum cost. Standalone systems are self-contained systems with some available in weatherproof enclosures for exterior applications, A standalone is installed at each access point and programming of users is accomplished by management entering the data at each unit. Most standalone systems require data entry through a keypad that is enclosed in the system. This becomes an arduous task when user exceed 25 or access points are greater then three. Some systems do permit programming by computer and data transferred by a memory stick.

Standalone systems can provide limited access control such as:

• Built-in proximity card reader / keypad.
• Built-in clock/calendar.
• Multiple time zones.
• Multiple hold open time zones.
• Clock and transaction buffer maintain data for up to 3 days in the event of a power failure.
• Print menu, may require special printer.
• Timed anti-pass back.

The limitations of standalone systems are:

• Individual data bases must be maintained for each unit.
• Lack of remote access by management.
• Management must enter or retrieve data at each site.
• Most systems require programming to be done using a built in keypad.
• Data is fundamental and hard to evaluate.

Standalone systems provide a valuable means for fundamental access control when used in the correct application. When a site consist of three or more access points or exceeds 25 users a client may become discouraged with the inherent inconveniences and limitations of the systems.

tjh 9/07