The real service: open a right, then close it
A flat let above the shops of la Demi-Lune changes hands more often than a house up in Le Bourg, and every departure leaves spares somewhere. A code is revoked, a fob is disabled: that is where a smart lock genuinely replaces changing the cylinder over and over. On reversible models the cylinder stays where it is and the key still works as the fallback.
In the houses of Alaï, Le Méginand and Vaubonne the use is different. It is about letting in a carer, a tradesman or a relative while you are away, rather than leaving a key under a pot by the gate. The right opens for a defined window and closes again afterwards, and nobody has to collect or hand back a set of keys.
Then there is the log. Most models keep a timestamped record of openings. In a shop unit on the ground floor of an avenue Charles de Gaulle building, where several people open and close, that record has real value — and it is personal data, which the people concerned must be told about and which is consulted only for a stated reason.
What the door imposes, and what must stay mechanical
Compatibility is checked before buying. On the solid timber doors of Le Bourg, the thickness of the leaf, the type of cylinder and the space available on the inside rule out a good many models. A motor that turns the existing cylinder is often the only reversible option on that joinery, and the door is measured before any hardware is ordered.
Battery life is the next constraint. These locks run on cells, and winter on the hills west of Lyon is not kind to them. Check exactly what backup is provided — a mechanical barrel, an emergency power contact — before buying: that is what decides whether a flat battery leaves you standing outside. A low-battery warning is useful, but it is not a backup.
Finally, a connected motor adds nothing to mechanical resistance. On an old landing door in la Demi-Lune, resistance to forcing is still that of the leaf, the frame and the mechanism. Convenient access management and burglary resistance are two separate subjects: strengthening the door is another job, planned separately.
How does this service work?
Techniques, typical situations, standards and things to watch out for: it is all on our smart lock page. This page focuses on what the service involves in Tassin-la-Demi-Lune.