... mob,tel,key TAIYITO TDX4488 Fingerprint Door Lock smart lock It can fixed with burglarproof door, wooden door, office door etc, have four ways to open ... key.Have the normally door set open function, in the door lock back have a small button for the lock, turn it to ... to install it on the new door or old one, suitable for home, office, commercial building, hotel etc. Function description:Remote control: ...