How to install a Tixa Smart Lock on an existing door

What the installer checks, what changes on your door, how long it takes, and what to set up in the app the same evening.

Quick answer: A Tixa Smart Lock fits most wooden and metal doors between 40 and 100 mm thick, replaces the existing mortise lock, and is installed by a Tixa technician in about an hour. You keep a mechanical key as backup and set up fingerprints, PINs and app access the same day.

Will it fit my door?

Door thickness between 40 and 100 mm.
Wooden, laminated, metal and most composite doors.
Inward or outward opening; the lock is reversible.
If your door already has a mortise lock, the new lock usually uses the same cut-out.

What the installer does

Measures the door, the existing lock body and the strike plate on the frame.
Removes the old handle set and mortise lock.
Fits the Tixa lock body, front and rear panels and the strike plate, adjusting the cut-out if needed.
Fits batteries and tests the latch, deadbolt and the emergency USB power contact.
Pairs the lock with the Tixa app and registers the first fingerprint and admin PIN with you.

Set up the same evening

Register a fingerprint for each family member, two fingers each.
Create a PIN you can share by phone in an emergency.
Add time-limited PINs for domestic help or deliveries.
Turn on auto-lock so the door locks itself a few seconds after closing.
Put the mechanical keys somewhere you will remember, not on the shoe rack.

Looking after it

Batteries last months with normal use and the app warns you well ahead. If they ever run flat, a power bank on the emergency USB port wakes the lock for a single entry. Wipe the fingerprint reader with a dry cloth occasionally; that is the whole maintenance schedule.

Frequently asked questions

Can it be installed on a flat’s main door with a safety grill?

Yes. The grill is unaffected. If you want the grill automated too, ask during the site check.

Does the lock need Wi‑Fi?

No. Fingerprint, PIN and card work with no network. The app connection adds remote access and alerts.

Will the society or landlord object?

The lock replaces an existing lock in an existing cut-out, so it is treated like any lock change. Keep the old lock to refit if you move out.

Key takeaways

Fits 40–100 mm doors, installed in about an hour.
Fingerprint, PIN, card, app and a mechanical key.
Set up family fingerprints and auto-lock on day one.