K40 RFID Biometric Fingerprint time attendance device and access control terminal, which can connect third party electric lock, exit button. the 2.8 TFT screen can display more information vividly, including finger image and verification result etc. Most Importantly This K40 fingerprint time attendance devices has inbuilt Battery Backup. This Biometric fingerprint time attendance comes with free attendance management software zk time 5 which helps you to view time attendance records.