1. providing whole-day security protection, one-year life battery capacity, no extra maintenance charges 

2. preventing passage in or out without permission. Preventing from leaving emergent exit personally, and reduce the possibility of Lose.  

3. obvious pushing mark facilitates easy  operation 

4. durable, Reliable and long working life    

5. solid, anti-theft, stainless steel lock tongue   

6. key Pad is designed to set alarm mode, no alarm mode, low voltage monitoring mode, door magnetic signal and LED indicator 

7. matching Double Door Device to facilitate double door open simultaneously and conveniently