ARREGUI CI30P Invisible Security Door Lock with 4 Remote Controls Anti Theft Smash Electronic Smart Interior Silver

INVISIBLE, INTERIOR PLACEMENT: Security door lock to be placed inside: Thieves do not know about its existence or at what height of the door it is, making it more difficult to force or drill. REINFORCED SECURITY FOR HOUSES AND LOCALS: It works as a second lock; it can be used both in homes and in premises, offices and offices where we want to have extra security. SMART POWER MANAGEMENT SYSTEM: Powered by 4 batteries (supplied); emits an audible and light warning when the batteries are running low. Automatic unlock in case of dead batteries and micro USB port. REMOTE CONTROL: Opening and closing via remote control. Includes 4 remote controls that can be reprogrammed in case of loss or stolen. Up to 10 remote controls can also be added if desired (to be purchased separately). AUTOMATIC LOCKING PARAMETER: You can simply parameter that the lock closes automatically when the door is closed. Once the door is closed, the lock beeps and after 4 seconds it closes.