Multiple Door Access Systems Block Diagram
1) An access device such as a keypad, card reader, or fingerprint reader, or combination of these devices is located outside the entry point. The entry point can be a gate, interior, or exterior door.
2) A pushbutton or push-rail is located on or adjacent to the door for egress. All doors must have a positive fail-safe way of exiting.
3) A magnetic lock or electric strike is used to physically secure the door.
4) Power supply with battery backup is used to power the keypad, locking device, and the controllers. The battery backup is necessary to assure that access is available during power outages.
5) Each controller can have 1-4 doors connected to it. The controller on most installations is configured from 2-4 doors. When control over one door is needed a stand alone system is usually utilized. Most controllers can be connected directly to a printer and or a computer to view transactions. User info is entered into controller that determines which doors or gates, and what times and days the user can have access.