Features & Advantages         of the Product
   Before use this product
   Product Specification
        and Composition
Features & Advantages of the Product
One touch mute function
Master seccret code function
Battery replacement warning function
Notice operation state with beep sound
Backlight function
Easy and hgh mobility installation system
Automatic locking function
Secret code memory function(back up function)
Automatic relockingg function
Emergency external power supply system
Double locking function