ARREGUI CI10B E Invisible 4 Keyless Additional Security Door Remote Control, Electronic Lock White

Invisible from the outside: the lock is attached inside, so burglar knows neither of its existence nor at what height it is, which makes it difficult to break or drill. Additional security for doors: this additional lock is made of steel and is intended for apartment and front doors, as well as for shops or offices where extra security is desired. It can be attached to wood and also metal doors. Includes 4 remote controls: the electric lock is opened and closed using the remote controls. The remote controls can be reprogrammed if one of them is stolen or lost. Additional remote controls are sold separately. Impossible to stay excluded: the lock emits an acoustic warning signal when the batteries are almost empty, and cannot be closed until the batteries are changed. All batteries included: 4 batteries + 1 emergency battery. Extremely safe and easy to install: radio frequency remote controls, the encryption of the data is done by rolling codes, which are therefore not copy by frequency tuner. Easy installation, no cables, fixings included.