Unmanned substations access control system maintenance during operation should try to make it simple. Operation of the system can be truly open electrical work, be able to run the plug level. And maintenance without the use of excessive special maintenance tools. From the configuration of the computer to the system configuration, the front-end configuration of the device are fully carefully considered the system reliability, and implementation of the appropriate certification. We achieve the lowest failure rate of the system, but also because, even taking into account the reasons for the unexpected And if a problem occurs, to ensure convenient and fast recovery of data stored, and to ensure emergency can quickly open the channel. maintenance of the entire system is on-line, and does not maintain the part of the device, and stops normal operation of all equipment by non- unattended substation access control systems, unmanned substation can bring out management problems. Features are as follows: 1. The substation door open retractable doors off control; 2. One key voice intercom; 3. Video review; 4. Remote door; 5. Compatible with all kinds of smart cards.