Fence rails. Electronic fence is the most advanced perimeter anti-theft alarm system, which consists of electronic fencing master (JS-TD2010) and the front-end detection fence components. Electronic fencing master is a pulsed signal is produced and received, and front-end detection fence in contact, short circuit, open circuit State can generate alarm signals and alarm intrusion signal is sent to the Center; front end detection fence by Rod and metal elements, such as the wire's physical perimeter. By controlling the keyboard or software, multilevel interconnection.