MANTRA Biometric Access Controller for doors and time attendance clcok machine with fingerprint security through web based. Ideally, BIOWEB B2 features standard TCP/IP and RS485 interfaces for main communication between devices and the server. It also supports USB/Voice and Wiegand interfaces to provide maximum versatility. BIOWEB B2 has optional WiFi and 4G and Power-over-Ethernet for flexible installation.