To choose the right electronic access control system, start by considering what other applications it would have to connect with. The two most common are monitored alarms and time and attendance.

Decide if you want a free exit or controlled exit system. In a free exit system, there is no requirement for passing out of the secure area. The electronic access control system either detects someone approaching an exit (usually through motion sensors) and unlocks the door, or has a release button or bar that allows people to leave.

Controlled exit systems use the same security for travel in both directions: employees have to enter the code or wave their card to get in or out of the secure area. By law they have to be set up to allow people to exit if the system fails or power goes out. Controlled exit systems increase both security and your overall costs.

Finally, think about the number of doors you need to secure. Smaller installations may include just one: a server room, or the main entrance. Not every door has to have electronic access control – you can simply leave some locked and only give keys to appropriate personnel.

Electronic access control features
In smaller systems, you simply connect a PC to the keypad or reader to configure the system. Larger electronic access control systems may need a dedicated computer to manage multiple doors. Some features to look for:

• Timing – lets you set specified times when the door should lock and unlock.
• Tracking – reports who opened the door and when.
• Battery backup – keeps your premises secure even during a power failure.