Why the door matters more than the app
Schlage's app has a log entry called "Lock Jammed." Schlage defines it as the bolt meeting an obstruction while it extends into the strike plate or retracts, and it names misalignment as a common cause. The lock is usually fine. The door is not lined up with it.
With a manual deadbolt, you never notice a slight rub. Your hand adds a little lift or a little push without thinking. A motor only has the force it was designed with, so if the bolt drags on the strike, it stops and reports a jam.
Text version of this diagram
Panel 1, aligned: the bolt passes through the strike plate opening and extends its full 1 inch into a pocket at least 1 inch deep.
Panel 2, door sags: the door has dropped, so the bolt sits lower than the opening, hits the plate and stops short. A motorized lock records this as a jam.
This is not new thinking. In an older guide, Schlage explained that it made one keypad deadbolt manual-throw because its engineers wanted the bolt to lock securely even as doors expand and contract with temperature and humidity.
So before any smart deadbolt installation, we fix the path the bolt travels:
- Find the rub. Schlage's method is to coat the bolt with chalk or lipstick, lock and unlock, and look for the mark on the strike.
- Deepen the pocket. Schlage and Yale both say the hole behind the strike should be at least 1" deep, so the bolt extends fully without dragging.
- Move the strike. Yale's advice when the bolt hits the plate is to reposition the plate to line up with the bolt.
- Lift the door. Schlage notes that worn or loose hinges let a door sag, and the fix is new hinges or shims.
If you want to work through those checks yourself first, our guide to a deadbolt that won't lock covers them step by step.
Choosing how the lock connects
Picking the radio is the first decision in any smart deadbolt installation, because it sets what else you need at home and how you control the lock from away. Here is how the common options compare, using what the standards bodies and manufacturers publish.
| Connection | How you reach it | Extra hardware | Worth knowing |
|---|---|---|---|
| Keypad only | A code at the door | None | No app, no remote access |
| Bluetooth | Your phone, close to the door | A bridge or hub for remote use, depending on the model | Simple, short range |
| Wi-Fi | Your home router | None | Encode Plus, for one, needs 2.4 GHz |
| Z-Wave | A Z-Wave controller (hub or panel) | Yes | Mesh network, about 100 m per hop, S2 security classes |
| Zigbee | A Zigbee hub | Yes | Self-healing mesh, built for low power |
| Matter over Thread | A Matter controller in the home | Yes, for remote control | Multi-admin across platforms |
A few details matter more than the brochure suggests. Z-Wave in the US runs on its own frequencies (908.42 and 916 MHz for standard Z-Wave), away from Wi-Fi. A newer Z-Wave Long Range mode uses a star layout instead of a mesh and is US-only for now.
Matter is the newest option. The Connectivity Standards Alliance released Matter 1.0 on October 4, 2022, with door locks among the first device types. It runs over Wi-Fi, Thread and Ethernet, uses Bluetooth LE only to set devices up, and works locally, so remote control needs an internet-connected controller inside the home.
One trap: there is no native link between Matter and Zigbee. If your home already runs on a Zigbee hub, a Matter lock needs a bridge, and a Zigbee lock will not appear in a Matter app on its own.
Retrofit or a full smart deadbolt installation
There are two ways to make a deadbolt smart, and they behave very differently on the door.
A retrofit replaces only the inside half of your existing deadbolt. The outside cylinder, the bolt and your keys stay. It is the least invasive choice, but it inherits everything about the lock underneath. Consumer Reports puts it plainly: a retrofit's kick, pick and drill resistance depends entirely on the deadbolt it is paired with. If that bolt already drags, the retrofit motor will drag too.
A full smart deadbolt installation replaces the whole lock. Most use the standard door prep, so they fit existing holes. The Schlage Encode Plus fits 1-3/8" to 1-3/4" doors at either common backset and carries A156.40 Grade AAA and A156.36 Grade 1 ratings, which a retrofit cannot add to a weak lock.
If you are comparing styles beyond smart locks, our overview of the types of deadbolts puts keyless models next to the mechanical ones. For a straight mechanical swap with no electronics, see deadbolt replacement.
Batteries, backup keys and dead-battery plans
Every smart deadbolt runs on batteries, and every one eventually warns you they are low. Schlage rates the Encode Plus at up to six months on four AA batteries with typical use. Yale's keypad lock signals low battery with a steady red light and five beeps, and Yale says to replace all four AA alkaline batteries together.
The mechanical key is your fallback when batteries or electronics fail. The Encode Plus ships with one backup key. Yale's support pages say directly that if the lock fails, you use the mechanical key.
The backup cylinder is an ordinary keyed cylinder, so it can be rekeyed to match your other locks. If you ever do end up outside with a dead lock and no key, our deadbolt lockout service handles smart locks too.
What a smart lock does not change about security
Connectivity adds convenience, not strength. Consumer Reports found smart locks just as susceptible to forced entry as nonconnected locks. A kick still lands on the bolt, the strike and the frame.
That is why we check the strike screws during every smart deadbolt installation. If they only reach the jamb, strike plate reinforcement with 3 inch screws is worth doing while the door is already open.
On the digital side, the protocols build in their own protections. The Z-Wave Alliance lists S2 security classes, and TechTarget reports that certified Z-Wave devices have been required to use S2 since April 2017. Your part is housekeeping: delete codes and app users when someone moves out or a job ends.
How we handle a smart deadbolt installation at Deadbolt Fixers
-
Check the door
Test the existing bolt with the door closed, then fix hinge sag, strike position and pocket depth first.
-
Fit the lock
Mount the retrofit or full lock to the manufacturer instructions for your door thickness and backset.
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Connect it
Join the lock to your Wi-Fi, hub or Matter controller and confirm it responds from the app.
-
Test under the motor
Lock and unlock repeatedly with the door shut, from the keypad, the app and the key.
-
Hand over
Set up users and codes, show you the low-battery signal and confirm where the backup key lives.
As for price, typical national figures vary by location and source. Fixr (January 2025) puts a smart lock installation at $250 to $400 on average, and Homewyse (January 2026) estimates installation at $94.71 to $227 per lock. Our cost guide for deadbolt work explains what moves a quote up or down.
The one-finger test before you buy
Close your door and turn the existing thumb turn with one finger. If the bolt slides home and back with no push, pull or lift on the door, a motorized lock will be happy there.
If you need to lean on the door to lock it, the motor will feel the same resistance and lose. Get the alignment fixed first, and the smart lock you choose will work the way the box promises.
Next step
Talk to a Deadbolt Fixers specialist
Tell us about the door, the lock and what is going wrong. We will tell you what the job involves before any work starts.
Frequently asked questions
Do smart deadbolts need Wi-Fi to work?
No. Keypad-only locks need no network, and Bluetooth, Z-Wave, Zigbee and Thread locks connect through your phone, a hub or a controller instead. Wi-Fi models simply skip the hub by joining your router directly.
Will a smart lock connect to 5 GHz Wi-Fi?
Check the box before buying. Schlage's Encode Plus, for example, requires a 2.4 GHz network, so a router set to 5 GHz only will not work with it.
What is a Matter smart lock?
It is a lock certified to Matter, the standard the Connectivity Standards Alliance released in October 2022. Matter works over Wi-Fi, Thread and Ethernet, and its multi-admin feature lets you control one lock from more than one platform.
Is Thread or Wi-Fi better for a smart lock?
The Connectivity Standards Alliance describes Thread as best suited to low-power devices such as locks. Wi-Fi locks avoid needing a Thread controller but depend on a good 2.4 GHz signal at the door.
Can Zigbee locks work with Matter?
Not directly. The Connectivity Standards Alliance says there is no native interoperability between Matter and Zigbee devices, though a bridge can connect them.
Does a Z-Wave deadbolt need a hub?
Yes. A Z-Wave lock joins a Z-Wave controller, such as a smart home hub or a compatible security panel, which then connects it to your app.
How long do smart deadbolt batteries last?
It depends on the model and how often it is used. Schlage rates the Encode Plus at up to six months on four AA alkaline batteries with typical use.
What happens if my smart lock batteries die?
Most smart deadbolts keep a mechanical cylinder, so the backup key still opens the door. Yale's support pages, for example, say to use the mechanical key if the lock fails.
Why does my smart lock say it is jammed?
Schlage defines a jam as the bolt hitting an obstruction while extending into the strike or retracting, and names misalignment as a common cause. Check that the bolt and strike line up before blaming the lock.
Is a retrofit smart lock as secure as a full smart deadbolt?
Only as secure as the deadbolt underneath it. Consumer Reports says a retrofit's kick, pick and drill resistance depends entirely on the deadbolt it is paired with.
Are smart locks easier to kick in than regular deadbolts?
Not easier, but not harder either. Consumer Reports found smart locks just as susceptible to forced entry as nonconnected locks, so the strike and frame still do the heavy work.
Can I keep my current house key with a smart lock?
With a retrofit, yes, because the outside cylinder and its keys stay. A full smart deadbolt comes with its own cylinder, which can be rekeyed to match your other locks if the keyway allows.
Why were some keypad deadbolts made with a manual bolt instead of a motor?
Schlage explained in an older guide that its engineers wanted the bolt to lock securely even as doors expand and contract with temperature and humidity. A hand can push past slight binding, while a motor may stall.