This is a widely used Bio-metric Fingerprint Access Control in the office. Choosing a lot of stable parts, strictly follow the national security product standard . It is suitable for the entrances and exits of office, factory ,hotel ,school ,etc .All input /output are using A.J. anti-interference protection and over-voltage/circuit protection. The product experiences the strict degradation test before leaving factory, The greatest advantage it is easy to install, with multi functional & elegant design and reasonable price.