K20 is a fingerprint time & attendance and access control terminal,which can connect with third party electric lock,exit button With SSR report(Self Service Report)store in the time clock.The 2.8inch TFT screen can display more information vividly, including finger print image and verification result etc. TCP/IP communication is a stander function which makes sure the data transmission between terminal and PC can be easily done with in several seconds.Internal backup battery insures the device working normally when the power cut off suddenly. It,s an ideal product for SMB market.