Features: 1) Easy-to-use: to unlock with the verification of your fingerprint only2) Large system volume: one access control unit can include 210 users; one user can register three fingerprints, including one alarm fingerprint, so there are altogether 630 fingerprints can be stored in the memory3) Multi-user unlock: the system can be defined to be unlocked with a combination of 2 - 3 users, so as to improve the system safety4) Uninterrupted power supply: the user can choose different UPS device according to practical needs for higher security factor5) Alarm settings under various circumstances: various alarm signals can be sent out to prevent tamper, power loss or illegal disassembling attemptsborder=0> producing area:China supplying capacity:50,000pcs/year