An Aluminum Alloy Anti-Theft EAS (Electronic Article Surveillance) Security System is a type of anti-theft device used to deter shoplifting and other authorized removal of merchandise from retail stores. The system consists of a transmitter, receiver, and electronic tags which are attached to the merchandise. The transmitter emits an electromagnetic field which triggers an alarm when the tags pass through the field. The alarm alerts store personnel of possible shoplifting activity and can also be used to detect thieves attempting to steal the merchandise. The system features durable aluminum alloy construction, allowing it to be used in harsh environments. It is also designed for easy installation, maintenance, and monitoring.