Alarm Lock & Cleaner

Product Details:

Alarm Siren function: 
First Insert the key and rotated to open the lock then put lock rod with a concave groove towards the key port down  
When you hear the sound”di” that means the lock is coming into alarm situation, after 5 seconds, When the lock is vibrated again, it will give an alarm and keep alarm serial movement or vibration and each alarm will last 10’s  
If in a minute without triggering, returned to the original function.