The fingerprint reader can work with GV-AS / GV-EV Controller and GV-ASManager to create a complete access control system. Three types of operation modes are supported: Card + Fingerprint, Fingerprint Only and Card Only. Can be a standalone fingerprint reader. Three types of access modes: card only, fingerprint only and card plus fingerprint. Connect with GV-AS Controller through TCP/IP interface (WAN). Enroll fingerprints through TCP/IP connection with GV-ASManager (Fingerprint Only Mode). Support for GV-Proximity Cards with GID (Geovision Identifier) to enhance security. Capacitive sensor for GV-GF1921 / Optical sensor for GV-GF1922.