Package includes: 1pc controller PCB board "ZKTeco C3-100 C3-200 C3-400 Series TCP/IP Single Door Access Control PCB board ZK Access Systems are built on flexible, open technology to provide management, real-time monitoring , and control of your access control systemall from a browser, with no additional software to install. Our secure Web-hosted infrastructure and centralized online administration reduce your IT costs and allow you to easily manage all of your access points in a single location. C3-100 versatile design features take care of present and future needs with ease and efficiency. It is one of the most rugged and reliable controllers on the market, with a multitude of built-in features. The C3-100 can communicate at 38.4 Kbps via RS-485 configuration or Ethernet TCP/IP networks. It can store up to 30,000 cardholders. SDK (Software Development Kit) is available for the customer to integrate the controller into existing access control software or to develop new software. Features: Multiple hardware protection measure There are over-current protection, over-voltage protection, reversal protection for the power supply and all the input and output terminal. Integration with Other Security Systems C3-100 can be integrated with other security systems such as CCTV, fire alarm, BAS(building automation system) and other systems to configure total security system. Supports different wiegand reader wiegand format, and can connect to different reader, including ID card reader and MF card reader. Input/Output Ports to Control Doors Connect with variety of sensors, alarms, exit buttons, electric lock and other devices. Variety of Communication Function Using either serial or TCP/IP communication, it provides reliable network system. B/S structure software It is easy to manage the system by browser from client PC. There is no need to install software on each client. Real-time Monitoring of Door status Using the management software, it allows real-time monitoring and control of door opening and closing of the whole system. Interlock function Link different doors with special logic that one door is Open, others should be closed. Multi-card operation This function is used to manage visitors or to manage some special high secure place. The doors are opened when appointed number registered cards are read together. Duress Mode The system integrator can use the SDK to integrate the hardware into their existing access control software system or to develop a new software. "