1. It is so easy to close the lock just only to press the pushbutton of the inside plate, and lift up the handle;
2. When it unlocks is the passage lock. It so convenience to open the lock when you down press the handle;
3. It is not only can through to the password to open the lock, but also can use the key of necessity to open the lock;
4. It is use freely to control the lock. To press the pushbutton of the inside plate,
And lift up the handle to close the lock, to press the handle to open the lock; To circumgyrate the knob also can open the lock and close the lock;
5. The password setting can be divided into as the single grade and the double grade. The password can be set from four counts to eight -figure number.