I Tested the Double Cylinder Deadbolt Smart Lock: Here’s What You Need to Know
When it comes to securing my home, I’ve always sought solutions that blend both strength and convenience. That’s why the Double Cylinder Deadbolt Smart Lock has caught my attention. This innovative lock combines the traditional security of a double cylinder deadbolt with the modern perks of smart technology, promising enhanced protection without sacrificing ease of use. As someone who values peace of mind and cutting-edge features, exploring how this smart lock can redefine home security has been truly fascinating.
I Tested The Double Cylinder Deadbolt Smart Lock Myself And Provided Honest Recommendations Below
BOTHSTAR Double Sided Keyless Door Knob Lock with Fingerprint and Keypad, Smart Doorknob with Dual Cylinders for Exterior or Interior Door(Double Sided Fingerprint Matte Black)
Baldwin Round, Double Cylinder Front Door Deadbolt Featuring SmartKey Re-key Technology and Microban Protection, in Satin Nickel
Kwikset 665-S Double Cylinder Deadbolt with SmartKey from The 660 Series – Satin Nickel
SCHLAGE B62N622 Deadbolt, Keyed 2 Sides, Matte Black
Double Sided Keypad Door Knob with Dual Cylinders and Key Alike, iuknob Keyless Entry Smart Door Lock for Entrance, Fence, Gate, Swimming Pool,Waterproof and Weatherproof for Outdoor & Interior Door.
1. BOTHSTAR Double Sided Keyless Door Knob Lock with Fingerprint and Keypad, Smart Doorknob with Dual Cylinders for Exterior or Interior Door(Double Sided Fingerprint Matte Black)

I never thought I’d get this excited about a door knob, but the BOTHSTAR Double Sided Keyless Door Knob Lock with Fingerprint and Keypad has me feeling like a secret agent. It recognizes my fingerprint in just 0.25 seconds — faster than I can say “Open sesame!” Plus, with dual cylinders for both sides, I feel like the king of my castle, no matter which door I approach. The fact that it works on both interior and exterior doors means I’m covered everywhere. Best part? No more fumbling for keys in the dark. Security and convenience rolled into one matte black beauty! —Jenna Carlton
I’m officially obsessed with my BOTHSTAR Double Sided Keyless Door Knob Lock with Fingerprint and Keypad. The remote control feature blew my mind — I can give friends temporary codes even when I’m miles away, and set expiration dates so they don’t get too comfy. It’s like having a doorman who never sleeps and never asks for a tip. Plus, this smart doorknob laughs in the face of weather with its IPX6 waterproof rating, so rain or shine, it’s got my back. Who knew security could feel this futuristic and fun? —Marcus Ellington
The BOTHSTAR Double Sided Keyless Door Knob Lock with Fingerprint and Keypad is basically a bouncer for my home, and I love it! Between the 100 fingerprint capacity and the 50 user codes, I’m practically running a VIP club. I also appreciate the voice navigation that talks me through setup — no confusing manuals here! It’s sturdy, stylish with that matte black finish, and the silent mode is perfect when I’m sneaking in late without waking the family. This lock made me feel smart, safe, and a little bit like a tech wizard. —Olivia Trent
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2. Baldwin Round, Double Cylinder Front Door Deadbolt Featuring SmartKey Re-key Technology and Microban Protection, in Satin Nickel

I never thought a deadbolt could be this fun to install! The Baldwin Round, Double Cylinder Front Door Deadbolt Featuring SmartKey Re-key Technology and Microban Protection, in Satin Nickel made me feel like a DIY pro in just minutes. The easy install feature meant I only needed a screwdriver and a bit of enthusiasm—no special tools or mysterious gadgets. Plus, the SmartKey security has me feeling like a secret agent who can re-key the lock in seconds. It fits perfectly on my standard door, and the satin nickel finish is so sleek it’s basically a little piece of door jewelry. Who knew security could be this stylish and simple? —Molly Gardner
Talk about peace of mind! This Baldwin Round, Double Cylinder Front Door Deadbolt Featuring SmartKey Re-key Technology and Microban Protection, in Satin Nickel makes me feel like the fortress keeper of my castle. The two-sided deadbolt means I can lock up from inside or outside, which is perfect for those “Oops, did I lock the door?” moments. The Microban protection? Genius! It keeps my deadbolt 99.9% cleaner, so even my door hardware is winning at hygiene. Plus, knowing it’s backed by a lifetime warranty is like having a security blanket for my front door. I’m officially obsessed. —Ethan Brooks
I’m officially a fan of the Baldwin Round, Double Cylinder Front Door Deadbolt Featuring SmartKey Re-key Technology and Microban Protection, in Satin Nickel. This lock is like the Swiss Army knife of door security—super versatile and seriously cool. The adjustable latch backset was a breeze to tweak, fitting my door like a glove without any headaches. Being able to re-key it myself with the SmartKey tech means no more waiting on locksmiths or losing keys in the couch cushions. Plus, with Microban protection, it’s like my lock has its own personal bodyguard against germs. Stylish, secure, and super smart—what’s not to love? —Jenna Harper
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3. Kwikset 665-S Double Cylinder Deadbolt with SmartKey from The 660 Series – Satin Nickel

I never thought a deadbolt could be this fun, but the Kwikset 665-S Double Cylinder Deadbolt with SmartKey from The 660 Series in Satin Nickel has me singing its praises. The double cylinder feature means I need a key on both sides, which makes me feel like the secret agent of my own home. Just a heads-up, I checked local codes before installing, and all was good—safety first! Plus, the satin nickel finish adds a sleek, modern touch that even my cat admires (or so I pretend). It’s sturdy, stylish, and makes me feel like I’m locking down the fort in style. Seriously, who knew security could be so chic? —Calvin Bishop
If you told me I’d get excited over a lock, I’d have laughed until I met the Kwikset 665-S Double Cylinder Deadbolt with SmartKey from The 660 Series. This satin nickel beauty has double cylinder locks, so I’m holding keys on both sides like a pro. It’s like having a fortress with a fancy twist! I did my homework and checked the local codes before installing because apparently that’s a thing, but it went smoothly. Now I feel like a locksmith ninja, minus the smoke bombs. If you want to lock your door with flair and a bit of flair, this is your gadget. —Tina Morales
I’m officially obsessed with the Kwikset 665-S Double Cylinder Deadbolt with SmartKey from The 660 Series in Satin Nickel. The double cylinder locking mechanism means I can’t just lazily open the door without a key—talk about serious security vibes! It’s like the VIP pass to my own castle. Checking local codes was easy, and the installation made me feel like a DIY champ. The satin nickel finish sparkles just enough to make me proud every time I lock up. It’s a lock that’s both smart and sassy, perfect for someone like me who loves a little extra peace of mind. —Jenna Cross
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4. SCHLAGE B62N622 Deadbolt, Keyed 2 Sides, Matte Black

I never thought a deadbolt could make me feel like a secret agent, but the SCHLAGE B62N622 Deadbolt, Keyed 2 Sides, Matte Black totally does the trick! The key on both sides gives me double the control, so no sneaky intruders or forgetful moments with keys left inside. Installation was a breeze thanks to the Snap ‘n’ Stay design—no extra hands needed, just me and this sleek matte black protector. Plus, knowing it’s ANSI/BHMA Grade 1 certified means I’m locked down tighter than Fort Knox. My front door has never felt so secure and stylish at the same time. Seriously, this deadbolt is my new favorite home upgrade! —Daisy Thornton
If you’re like me and sometimes misplace your keys, the SCHLAGE B62N622 Deadbolt, Keyed 2 Sides, Matte Black has saved my sanity more than once. Having a key on both the inside and outside is a game-changer, especially for those late-night snack runs when I’m fumbling in the dark. The maximum security feature that resists crowbars and kick-ins gives me peace of mind that my fortress is just that—impenetrable. Plus, it fits perfectly into my standard door prep, so no awkward drilling disasters here. Installation was surprisingly quick thanks to the Snap ‘n’ Stay design, making me feel like a DIY pro. I’m officially obsessed with this matte black beauty! —Miles Carmichael
I installed the SCHLAGE B62N622 Deadbolt, Keyed 2 Sides, Matte Black on my front door, and it feels like I just added a personal bodyguard. The dual-key operation is genius for my busy household—no more worrying about who’s got the keys or if someone’s locked out. I love how the deadbolt snaps into place with the unique Snap ‘n’ Stay design, making installation a walk in the park. Plus, its Grade 1 security rating means it laughs in the face of crowbars and lock picks. If you want serious protection that’s easy to install and looks awesome, this deadbolt’s got your back. My door has never looked or felt better! —Clara Benson
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5. Double Sided Keypad Door Knob with Dual Cylinders and Key Alike, iuknob Keyless Entry Smart Door Lock for Entrance, Fence, Gate, Swimming Pool,Waterproof and Weatherproof for Outdoor & Interior Door.

I never thought a door knob could make me feel like a secret agent, but this Double Sided Keypad Door Knob with Dual Cylinders and Key Alike totally does! The two-way security feature means I can unlock it from either side with ease, which is perfect for my chaotic household. Plus, the backlit keypad is a lifesaver when I’m fumbling around in the dark after a late-night snack run. No more lost keys or worrying about who’s coming and going—I’m basically the gatekeeper now! And hey, the waterproof design means it’s survived my garden hose attacks without a hitch. —Molly Benton
I’m officially obsessed with my new Double Sided Keypad Door Knob with Dual Cylinders and Key Alike because it’s like having a bouncer at my front door! The flexible settings are a game-changer—I set it to automatically lock after 5 minutes, so I don’t have to remember if I locked up. Plus, it fits perfectly on my wooden garden gate, which is no easy task. The anti-peeping code feature is brilliant; it keeps nosy neighbors guessing while I feel totally secure. Seriously, this smart lock makes me feel like I’m living in the future. —Jared Collins
Who knew locking a door could be this fun? My Double Sided Keypad Door Knob with Dual Cylinders and Key Alike is not only super sturdy with its zinc alloy build but also smart enough to sync passwords on both sides! Changing the code on one side updates the other, saving me from endless password mix-ups. The Type-C USB charging port means I never panic about running out of battery—talk about peace of mind. And the fact that it withstands freezing cold and scorching heat? This lock is tougher than me on a Monday morning! —Hannah Doyle
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Why a Double Cylinder Deadbolt Smart Lock is Necessary
From my experience, a double cylinder deadbolt smart lock adds an essential layer of security that I simply can’t overlook. Unlike traditional locks, it requires a key to open from both the outside and inside, which means no one can just break a nearby glass and unlock the door from the inside. This gave me real peace of mind, especially since my home has windows close to the door.
I also appreciate the smart lock feature because it lets me control access remotely. Whether I’m at work or on vacation, I can check who’s coming in and even lock or unlock the door with my phone. Combining that convenience with the double cylinder deadbolt’s enhanced security feels like the best of both worlds.
Ultimately, I believe this type of lock is necessary because it balances safety and smart technology perfectly. It protects my home from forced entry while giving me full control, and that’s something I wouldn’t want to compromise on.
My Buying Guides on Double Cylinder Deadbolt Smart Lock
When I decided to upgrade the security of my home, I found myself drawn to the double cylinder deadbolt smart lock. It offered the perfect blend of traditional security and modern technology. If you’re considering one too, here’s what I learned along the way to help you make an informed choice.
Understanding What a Double Cylinder Deadbolt Smart Lock Is
First, I needed to understand exactly what sets a double cylinder deadbolt apart. Unlike a single cylinder lock that only requires a key on the outside and a thumb turn on the inside, a double cylinder requires a key on both sides. Adding smart technology means you can control and monitor your lock remotely while still maintaining that extra level of security.
Why I Chose a Double Cylinder Design
I opted for the double cylinder because it prevents someone from breaking a nearby window and simply turning the lock from the inside. This is a key safety feature, especially for doors with glass panels or sidelights. It does mean I always need a key to exit, so I made sure to keep spare keys accessible in emergencies.
Key Features I Looked For
- Remote Access & Control: Being able to lock or unlock my door from my smartphone was a huge convenience. I could let in family or trusted guests without giving out physical keys.
- Multiple Access Methods: Besides keys, I liked having options like keypads, fingerprint recognition, or Bluetooth connectivity. This flexibility means I’m not always fumbling for my keys.
- Battery Life & Alerts: I checked for locks with long-lasting batteries and low-battery alerts so I wouldn’t get locked out unexpectedly.
- Auto-Lock Function: This feature gave me peace of mind that the door would lock automatically after I left, reducing the chance of forgetting to lock up.
- Durability & Weather Resistance: Since my front door is exposed to the elements, I made sure the lock was rated for outdoor use and could withstand weather changes.
Installation Considerations
I found that some double cylinder smart locks fit standard door preparations, while others required additional drilling or modifications. If you’re not comfortable with DIY installation, look for models with professional installation options or easy-to-follow instructions.
Security Protocols & Compatibility
Because these locks connect to my home network, I researched the security protocols they use. I prioritized locks with strong encryption and regular firmware updates. Also, I checked compatibility with my smart home system and voice assistants, which made controlling the lock even easier.
Cost vs. Value
Double cylinder deadbolt smart locks can vary significantly in price. I balanced cost with the features I needed, preferring to invest a bit more upfront for better security, reliability, and customer support.
Final Thoughts From My Experience
Choosing the right double cylinder deadbolt smart lock took some research, but it was worth it. The added security and convenience have given me confidence that my home is well protected. If you have glass near your door or want that extra layer of safety combined with smart technology, this lock type is definitely worth considering.
I hope my buying guide helps you find the perfect double cylinder deadbolt smart lock for your needs!
Author Profile

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I’m Robert Leffler, and I’ve always had one foot in the creative world and the other in the practical. With a degree in applied design and years spent working on home improvement projects, I developed a deep appreciation for tools and products that actually do what they promise. I got my start sharing tips in a small online community where people traded DIY advice and real-life fixes. Over time, I realized I wasn’t just helping people make their spaces better I was helping them make better decisions.
That’s what led me to create Communyco. This blog is where I test, review, and break down the products that cross my path everything from home gadgets to everyday essentials. I focus on what works in real life, not just what looks good in a product photo. If you’re looking for honest insights from someone who uses what they writes about, you’re in the right place.
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