LOCK FUNCTION

  The lock, like the general lock, but adopts the double billiards structure, so it is hardly for the people to discode.

ALARM FUNCTION

  The point is that it can distinguish the house owners and the thefts, with the function to alarm. After locking, the alarm system is under work, you can open the door normally; When the intruders prize the lock or door, it will alarm with large noise to warn away them.