Fingerprint Time Attendance with LED of Red,Green 1.Communication: RS232/485, TCP/IP 2.LED: Red, Green 3.LCD: 128*64mm (BTS-X628) Fingerprint Time Attendance & Fingerprint Attendance & Fingerprint Attendance Machine & Fingerprint Attendance System is popular device in the market. Product Introduction:1. Aiming at the older, children, different gender, different profession, different areas and ...