Electronic fence: It is the most advanced anti-theft perimeter alarm system, which consists of an electronic fence fence consisting of host and front-end detection. Electronic fence is a fence more active intrusion prevention residential security maintenance, intrusion attempts to fight back against the security maintenance standards, to repel the invaders, the delay time of the invasion, and do not threaten people's lives, and the invasion of the signal sent to the security sector Maintenance on monitoring security monitoring equipment to ensure that managers can keep abreast of the situation the alarm zone, quickly make a deal. Replacement of equipment maintenance service in line to replace the content consists of a replacement, alarm equipment, monitoring software maintenance, DVR equipment and ancillary equipment maintenance. Maintenance service mode 1, the control room computer room environment. 2, the device operating environment. 3, the installation location of all equipment operation. 4, line usage and line laying the path alignment methods. 5, line all interfaces, all the video head, terminal line contacts are secure. 6, software usage, software upgrades. 7, the system data backup situation. In the above work in the implementation process requires the user to provide the appropriate system wiring diagram, standoff point distribution, monitoring point distribution, as well as assist the relevant personnel. Monitoring security source _ Maintenance Maintenance (certified) _ Security Maintenance provided by Zhengzhou source maintenance Electronic Technology Co., Ltd. Zhengzhou source maintenance Electronic Technology Co., Ltd. (www.hnxywb.com) is a leader in Zhengzhou, integrated monitoring system, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In leading source maintenance staff warmly welcome all inquiries negotiations to create a better source of future maintenance.