Access control provides management the ability to permit or deny individuals, vehicles or assets access to one or more entry points to a building, rooms, parking lot or garage. The simplest form of access control is a traditional key and lock system. Keys are a positive means to secure a door, but keys are easy to duplicate and do not provide an activity report of the user. A major expense is when a key is lost. To provide security all the keys need to be replaced and locks need to be re-keyed.
Access control systems avoid these issues. Each user is assigned an individually coded proximity (prox) card that releases a door when the user presents his card to a proximity (prox) reader at the door. If a user loses the card or their privileges, management can delete a specific user's card without the cost of re-keying the lock(s) and keys of other users.
Access control systems range from inexpensive systems that function the same as a traditional keyed door, providing simple user activity reports: to complete access control system that independently controls multiple access points, elevators, gates and users access to them by time, day and hierarchy. Access control systems can be organizes into the following categories.
- Standalone Systems
A standalone system controls a single door, Any additions or deletions of users must be done at the each unit individually, usually through a ten number keypad. The most popular applications are sites with one to four doors in remote locations where cost is a prime concern. Most standalone systems provide some limited access control such as time zones, but they lack in the powerful features and benefits found in other systems.
- Programmable Systems
Programmable systems control multiple doors through system hardware called "controllers". Controllers are located by each door and wired together for data communications to a computer or modem. Each door's controller can be programmed so users have defined levels of access by day, time of day, holidays, hierarchy and other means. The controller stores users activities and can produce a report for managements review. Management makes changes to user through a computer connected directly to the access control system or remotely by an optional modem. The most common applications are office buildings, multi family residence and industrial buildings with 5 to 50 doors.
Tri-Cor has carefully researched the benefits and feature of each major manufacturer of access control systems. Tri-Cor has developed the empirical knowledge of each manufacturer and its equipments features and benefits. This resource of knowledge is available to provide dealers the competitive edge in the selection and design of a access control system. You can select with confidence any telephone entry system and be assured you will receive a quality product and knowledgeable support during installation and programming.