Features: 1. Luxury, firmness and elegance. No screw will be found in the lock surface. Five-latch mortise. 2. Put the RF Card directly near to the sensor on the front surface 3. Door thickness request no less than 3.5 cm. 4. Free rotating handle, maximum prolong mechanism life and also avoid unlock by violence. 5. No longer installs the electrical machinery into inside the mortise, which facilitated the maintenance work