Battery life depends on the technology used and the quality of the battery.
Rfid door lock bluetooth.
With a locking screw inside and a screw at the side for door thicknesses of 8 19 mm.
With 2 screws for glass thicknesses of 3 6 mm.
Rfid two card door lock and bluetooth control.
These will the be wired to the arduino with the 12 core alarm cable and block connector.
The ratchet is mounted on the inner sliding door and the lock can be attached effortlessly.
For the servo to connect to the door lock i 3d printed a holder to be screwed to the door and attached to the door lock.