Standalone, single door control. Low Priced, connect an electric strike and power supply and you're done No Control Panels - Standalone Access Controller Easy and simple to use Has a flat back so it's easy to install on any flat surface Operating Mode: Card only, Keypad only, Card with Keypad. Card capacity is 800 users. Programmable door release time: 1~250 seconds Access code can be added or deleted by keypad management. Built-in electric buzzer for audible card entry and programming. Data is protected even after power failure. Machined housing in high durable. ISO one /EM-ID thin card or keyfob optional