Smart lock setup: complete guide

A smart lock is one of the highest-value smart home upgrades. You can let in a caregiver, the dog walker, or a family member without giving anyone a key. You can check from your phone whether the door is locked. It auto-locks when you forget. For seniors aging in place or anyone who has people coming and going, it's a game changer.

Picking the right smart lock

The mainstream choices

• Schlage Encode (~$280): Wi-Fi built in (no extra hub needed). Solid build, physical keypad. Great for most homes. Works with Alexa, Google Home.
• Yale Assure Lock 2 (~$190-280): Available in keyed and keyless versions. Bluetooth standard, Wi-Fi/Matter optional. Great app, good for Apple HomeKit users.
• August Wi-Fi Smart Lock (~$200-230): Fits over your existing deadbolt (doesn't replace it). Easier install, keeps your physical keys working as before. Smaller and less obvious from outside.
• Aqara U200 (~$190): Matter-compatible, fingerprint reader, sleek design. Newer brand but well-reviewed.
• Level Lock+ (~$330): Looks like a regular deadbolt (motor hidden inside). For people who don't want a visible smart lock.

What to look for

• Physical keypad with buttons: for users with arthritis or vision issues. Avoid touchscreen-only.
• Backup physical key: for when batteries die or phone breaks.
• Wi-Fi built in OR Matter support: so you can control it from outside the house. Some require a hub.
• Auto-lock timer: locks itself after a few minutes if you forget. Critical feature.
• Multiple user codes: different codes for different people, can be enabled/disabled remotely.
• Battery life of 6+ months (AA batteries).
• ANSI Grade 1 or 2 deadbolt (look on packaging).

What to avoid

• No-name brands from Amazon with low review counts
• "Smart" locks that connect only via Bluetooth (can't check from work)
• Locks with only an app code (no physical keypad)
• Touchscreen-only models if you have arthritis

Step 1: Remove your old deadbolt

1. Open the door so you can work on both sides.
2. Inside: unscrew the two screws holding the inside thumb-turn. Set aside.
3. The deadbolt mechanism in the door edge usually has 2 screws on the door's edge. Unscrew them; pull out the deadbolt itself.
4. If everything is corroded or stuck, spray with WD-40 and wait 10 minutes.

Step 2: Install the new smart lock

1. Slide the new deadbolt mechanism into the hole in the door edge. Same orientation as the old one.
2. Screw it in place with the included screws.
3. Insert the outside half (the keypad or fingerprint side) so the spindle goes through the deadbolt.
4. From inside, attach the inside half (motorized housing). Make sure the spindle engages.
5. Screw the inside half to the outside half through the door.
6. Install the batteries.
7. Test by turning the thumb-turn or the motorized lock; the deadbolt should extend and retract smoothly.

If it binds or doesn't move easily, something is misaligned. Take it back apart and recheck.

Step 3: Set up the app

1. Download the smart lock's app (Schlage Home, August, Yale Access, etc.) from App Store or Play Store.
2. Create an account. Verify email.
3. In the app, choose Add a lock.
4. Stand near the lock. The app finds it via Bluetooth.
5. Follow the calibration steps (locking and unlocking a few times so the app knows the position).
6. Connect to Wi-Fi if your lock has Wi-Fi built in. Use the 2.4 GHz network (most smart locks don't support 5 GHz).

Step 4: Set codes

Master code

4-6 digits. Don't use 1234, 0000, your birth year, or your house number. Pick something random.

Family codes

Each family member gets their own unique code. Makes it easy to revoke one without changing everyone's.

Guest / temporary codes

• For a contractor: temporary code that only works during their work window.
• For a dog walker: code that works Mon-Fri 11am-1pm.
• For an Airbnb guest: code that works during their reservation.
• For a caregiver: ongoing code, easy to revoke if the caregiver changes.

One-time codes

Some apps generate codes that work exactly once. Useful for one-off deliveries.

Step 5: Turn on auto-lock

The single most useful feature. Find it in the app settings:

• Auto-lock after 1 minute / 5 minutes / 30 minutes (your choice)
• No more "did I lock the door?" doubt
• Especially important for seniors who may forget to lock

Step 6: Connect to your voice assistant

• Alexa: in the Alexa app, Devices > + > Add Device. Pick your lock brand. Sign in to your lock account.
• Google Home: in Google Home app, +> Set up device > Works with Google. Pick brand.
• Apple HomeKit: for locks that support it, scan the HomeKit code with the Home app on iPhone.

Now you can say "Alexa, lock the front door" or "Hey Siri, did I lock the front door?"

Sharing access with family or caregivers

Two ways:

Give them a code

Simpler. Works for anyone. They just punch in the code at the lock.

Invite them to the app

For close family, invite them to the lock's app. They can unlock from their phone, get notifications, and you can revoke access in one tap.

In the lock app: Family / Members / Guests > Invite > send invitation by email or text. They install the app and accept.

Privacy and security considerations

Change codes regularly

Particularly the master code. Every 6 months or after a contractor finishes work.

Don't share codes via text or email

Texts can be intercepted. If you must share by text, share verbally and confirm.

Watch the activity log

The app keeps a log of every lock and unlock. Review it weekly for the first month. You'll spot patterns: who's coming and going.

Wi-Fi security

Make sure your Wi-Fi password is strong (16+ characters, random). The smart lock is only as secure as your Wi-Fi.

Battery alerts

Set notifications for when batteries get low. Replace before they die. Most smart locks last 6-12 months on a set of AA batteries.

Backup plans for when things go wrong

• Batteries die suddenly: use the physical key (keep one outside in a lockbox or with a trusted neighbor).
• App stops working: use the keypad code or physical key.
• Wi-Fi goes down: Bluetooth still works locally; the keypad still works.
• Phone breaks: install the app on a new phone, sign in.
• Forgot your code: reset through the app, or use physical key.

The keypad code and physical key are your safety nets. They work even if Wi-Fi, phone, and app all fail simultaneously.

Smart lock for seniors aging in place

Specific tips:

• Physical buttons over touchscreen. Easier for vision-impaired hands.
• Set auto-lock so they don't have to remember.
• Give adult children remote access for emergencies or to let in service people.
• Set up notifications so adult children know when their parent has come home safely (or hasn't, by a certain time).
• Have a physical key hidden outside (in a key lockbox) for true emergencies.

Common problems

The lock won't lock or unlock smoothly

The door is misaligned. Tighten hinges, check the strike plate alignment. The deadbolt should slide freely without forcing.

Wi-Fi keeps disconnecting

Likely your Wi-Fi signal is weak at the front door. Mesh extender helps. See our mesh vs extender guide.

App says the lock is offline

Pull the batteries for 30 seconds, reinsert. Reconnect to Wi-Fi in the app.

Auto-lock keeps locking too fast (or too slow)

Adjust the timer in the app. Most allow 30 seconds to 30 minutes.

Code stops working

Check the app: was it disabled by mistake? Was the code's time window exceeded?

5 things to do after install

1. Set auto-lock to 2-5 minutes.
2. Generate a unique code for each family member.
3. Turn on lock/unlock notifications.
4. Test the physical key backup.
5. Add to your voice assistant (Alexa, Google, Siri).

Video walkthrough

Video by SchlageLocks on YouTube