1. Matching C7220 and M5001 lock body.

2. Triple unlocking ways: card, password and mechanical key.

3. A capacity of 200 smart cards and 10 groups of password.

4. Dissociated (race rotation) handle, preventing the door opened by force.

5. Sound alarm with flash when improperly locked, being prizing or in low voltage, much more humanized.

6. 9V of external DC IN port in case of emergency.

7. Password has peeping-proof function.

8. Passage function: always open or always closed.

9. Securities switch indoor, can get power interruption, enhancing the level of safety.

10. The surface for the lock body have patent.

Patent No: ZL2008 2 0204494.5