ESSC monitors & controls intrusion & Fire Alarms, installs CCTV Systems Analog & IP and installs Access Control Systems. ESSC installs, services and tests computer network cables including fiber optics. Businesses lose 50 billions of dollars each year due to theft by their employees or independent contractors. Even more alarming is the fact that employee theft accounts for 30% of business failures. To prevent these losses, it is important to control access to the doors as well as what's behind them. It is also essential to keep track of keys for valuable items and storage places. Other reasons exist for installing an access control system. Convenience is one of the reasons. It is convenient to not have keys. It is not necessary to change the keys when an employee leaves. By using a computer, you can easily change the access rights of who is allowed to go where when. Access control systems can also be used to track who has entered a door at what time.