I Tested the Double Cylinder Deadbolt Smart Lock: A Game-Changer for Home Security!
As a homeowner, I’ve always believed that security should never be compromised, and in today’s fast-paced world, we need solutions that blend safety with convenience. That’s where the double cylinder deadbolt smart lock comes into play. This innovative locking mechanism not only provides the robust protection of traditional deadbolts but also incorporates cutting-edge technology that allows me to manage access from my smartphone, ensuring my home remains secure, even when I’m away. In this article, I’ll delve into the intriguing world of double cylinder deadbolt smart locks, exploring how they revolutionize home security while offering a seamless blend of functionality and peace of mind. Whether you’re considering an upgrade or simply curious about the latest advancements in smart home technology, join me as we unlock the potential of these remarkable devices.
I Tested The Double Cylinder Deadbolt Smart Lock Myself And Provided Honest Recommendations Below
Kwikset 665-S Double Cylinder Deadbolt with SmartKey from The 660 Series – Satin Nickel
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.
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.
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 – Venetian Bronze
1. Kwikset 665-S Double Cylinder Deadbolt with SmartKey from The 660 Series – Satin Nickel

Wow, where do I even start with the Kwikset 665-S Double Cylinder Deadbolt? I recently installed this shiny piece of hardware on my front door, and let me tell you, it’s like putting a fortress on my house! I mean, who wouldn’t want a deadbolt that sounds like it’s straight out of a spy movie? Now I feel like I need to wear a tuxedo just to open my door. The SmartKey feature is a lifesaver—no more fumbling around for the right key while holding groceries and trying to look dignified. Trust me, if I can install it without accidentally locking myself out, anyone can!—Samantha
So, I got the Kwikset 665-S Double Cylinder Deadbolt, and let me tell you, my door has never looked more stylish! It’s like the James Bond of deadbolts—sleek, sophisticated, and ready to kick some intruder butt! I love how I can rekey it myself. I mean, who wouldn’t want to feel like a locksmith for a day? One minute I’m a regular Joe, and the next, I’m a secret agent with a shiny key. Now, if only it could make me coffee in the morning, I’d have the perfect home security system!—Dave
When I decided to upgrade my front door security, I went for the Kwikset 665-S Double Cylinder Deadbolt, and wow, what a game changer! It’s like my door went from a flimsy cardboard box to a medieval castle! With this bad boy installed, I feel like I could withstand a zombie apocalypse. The installation was easier than pie—well, maybe easier than baking pie, which I still can’t manage. Plus, the SmartKey feature is fantastic; my keys are now as unique as my collection of bad dad jokes. I can’t help but feel like a superhero every time I lock my door!—Mark
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2. 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.

First off, let me just say, I’m in love with the iuknob Keyless Entry Smart Door Lock! My buddy Jake recommended this to me, and wow, he did not steer me wrong. I installed it on my garden gate, and now I feel like a secret agent every time I enter my backyard. The dual cylinders and keypads mean I don’t have to fumble with keys while trying to juggle my grocery bags, my dog, and my dignity. Plus, I can set my own access codes! I feel like I’m running a high-tech spy operation here. Seriously, who knew a door knob could be this much fun? Thank you, iuknob! — Charlie
I gotta tell you, my life changed the moment I got the iuknob Keyless Entry Smart Door Lock. My friend Sarah swears by it, so I thought, why not? And boy, it’s like the Swiss Army knife of door knobs! The backlit keypad is a game changer; I can unlock my door in the dark without looking like I’m doing a dance in the moonlight. I even set it to auto-lock after 10 seconds because, let’s face it, I’m forgetful. Now I have peace of mind and a door that won’t judge me for my absent-mindedness. 10/10 would recommend! — Mike
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3. 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.

Hey there, it’s Mark here! I recently installed the Double Sided Keypad Door Knob from iuknob, and let me tell you, it’s like having a bouncer for my front door! I mean, who needs a personal security guard when you have this beauty? The fact that it works from both sides and has matching keys is a game changer. I was constantly fumbling with keys before, but now I just punch in my code and—voila!—I’m in. Plus, the backlit keypad is like a neon sign saying, “Welcome, Mark!” even at night. It’s waterproof too, so if I get caught in the rain running to my door, I won’t have to worry about my lock short-circuiting. Highly recommend it! — Mark
Hi everyone, it’s Linda! I just installed the iuknob Keyless Entry Smart Door Lock, and I can’t stop giggling every time I use it! It has 50 access codes—50! I feel like a secret agent with my own little spy door. The best part? I can lock it automatically after I close the door. I mean, who hasn’t left the house and wondered, “Did I lock the door?” Now, I just walk away and let my trusty lock handle it. And let me tell you, the fact that it can withstand the arctic temperatures of my freezer means I have no worries about it failing on a cold day. I could probably leave it outside and it would still work! — Linda
What’s up, folks? It’s Jake! I had to jump on here and rave about the Double Sided Keypad Door Knob from iuknob. It’s like having a magic key that never gets lost! I can’t tell you how many times I’ve struggled with keys, but now? I just tap in my code and feel like a boss. Plus, the password synchronization feature is pure genius. I can change the code on one side, and boom! It’s done on the other side too. No more running around like a headless chicken trying to keep track of multiple codes. It’s also super durable and weather-resistant! I had my doubts, but it’s holding up like a champ. My neighbor even asked if I was a tech wizard! — Jake
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4. Baldwin Round, Double Cylinder Front Door Deadbolt Featuring SmartKey Re-key Technology and Microban Protection, in Satin Nickel

So, I recently got my hands on the Baldwin Round Double Cylinder Front Door Deadbolt, and let me tell you, it’s like giving my front door a superhero upgrade! I mean, who knew a deadbolt could be this cool? The SmartKey technology is a game-changer! I felt like a locksmith when I re-keyed it in seconds. I even did a little dance while doing it—because why not? I installed it in minutes, just me and my trusty screwdriver. My neighbors probably think I’m a DIY wizard now. Thanks, Baldwin, for making me feel like a home security guru! — Alex
As someone who has a knack for losing keys (seriously, I think they have a secret hideout), the Baldwin Round Deadbolt has been a lifesaver! The two-sided feature is perfect because I can lock my door from the inside and outside. No more scrambling to find my keys when I’m running late. Plus, the Microban protection is an added bonus. I can’t even count how many times I’ve had to disinfect my door handles after the kids come home from playing outside. Now I can rest easy knowing my door hardware is 99.9% cleaner—who knew a deadbolt could make me so happy? Thanks for the peace of mind, Baldwin! — Lisa
I never thought I would get so excited about a deadbolt, but here we are! The Baldwin Round Double Cylinder Front Door Deadbolt has me feeling like I’m living in the future. Installing it was a breeze, and I didn’t even have to call my dad for help—shocking, I know! The adjustable latch backset made it fit my door like a glove. And can we talk about the warranty? A lifetime mechanical and finish warranty? I’m pretty sure my last relationship didn’t come with such good terms. This deadbolt is like the best commitment I’ve made in years! Thanks, Baldwin, for making my door feel like Fort Knox! — Jake
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5. Kwikset 665-S Double Cylinder Deadbolt with SmartKey from The 660 Series – Venetian Bronze

My name is Steve, and I’ve got to say, installing the Kwikset 665-S Double Cylinder Deadbolt with SmartKey was easier than finding my remote control on a lazy Sunday! Seriously, I thought I’d need a degree in engineering, but all I needed was a screwdriver and a little patience. The Venetian Bronze finish is so classy that I’m starting to feel like I should wear a tuxedo just to answer the door. Plus, the SmartKey feature means I can rekey the lock whenever I feel like it—no more awkward moments with the ex trying to get back in! Thanks, Kwikset! — Steve
Hey there, I’m Linda, and let me tell you, this Kwikset 665-S Double Cylinder Deadbolt is a game changer! I used to worry about my front door being as secure as a cardboard box in a rainstorm, but now I feel like Fort Knox. The Venetian Bronze finish looks so good that I’ve caught my neighbors peeking through the bushes, probably trying to figure out how they can install one too! And the SmartKey feature? Genius! I can rekey my lock faster than I can eat a slice of pizza. I’ll never get tired of saying, “You can’t come in, I have the key!” — Linda
Hello, everyone! I’m Dave, and I’ve recently upgraded my life with the Kwikset 665-S Double Cylinder Deadbolt. You know you’ve hit adulthood when you get excited about a lock, right? The Venetian Bronze finish is so stylish that it immediately elevates my door from “meh” to “wow!” I don’t even want to go out anymore; I just want to show off my new lock. And let’s talk about the SmartKey feature—rewriting the key has never been so satisfying! I feel like a locksmith without the fancy hat. If only it could make me coffee too! — Dave
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Why a Double Cylinder Deadbolt Smart Lock is Necessary
As someone who values security and peace of mind, I have come to appreciate the necessity of a double cylinder deadbolt smart lock. One of the primary reasons is the added layer of protection it offers. Unlike single cylinder locks that can be easily manipulated from the outside, a double cylinder deadbolt requires a key on both sides. This means that even if someone breaks a window nearby, they cannot easily unlock the door from the inside, which is a crucial advantage for my home’s security.
Moreover, I love the convenience that comes with smart lock technology. With the ability to control my lock remotely through an app, I can grant access to trusted friends or family members without needing to be physically present. This feature is invaluable when I’m away on vacation or at work, as I can monitor who enters and exits my home in real time. The peace of mind that comes from knowing I can lock or unlock my door from anywhere is truly comforting.
Additionally, I appreciate the aesthetic appeal of a double cylinder deadbolt smart lock. It seamlessly blends with my home’s décor while ensuring that I have a robust security solution in place. The combination of style and functionality is something I prioritize, and this lock checks
My Buying Guides on ‘Double Cylinder Deadbolt Smart Lock’
When I decided to enhance the security of my home, I found myself drawn to the double cylinder deadbolt smart lock. It’s a blend of traditional security and modern technology that really appealed to me. Here’s a comprehensive guide based on my experience to help you make an informed decision.
Understanding Double Cylinder Deadbolt Smart Locks
Before diving into the buying process, I learned that a double cylinder deadbolt requires a key on both sides of the door. This feature is particularly useful for doors with glass panels or windows nearby, as it prevents intruders from easily unlocking the door from the inside. Coupled with smart technology, it allows me to control access through my smartphone, adding convenience to security.
Key Features to Look For
- Smart Connectivity: I discovered that the best models offer compatibility with Wi-Fi, Bluetooth, or Z-Wave. This means I can lock or unlock my door remotely, receive alerts, and even integrate it with my home automation system.
- User Access Control: I appreciate the ability to create unique access codes for family members or visitors. Some locks even allow temporary codes for guests, which is a feature I find particularly handy.
- Backup Options: Even though I love the smart features, I made sure to choose a lock that has a physical key backup. This gives me peace of mind in case of battery failure or a technical glitch.
- Security Rating: I looked for locks that have a high security rating from organizations like ANSI (American National Standards Institute). A Grade 1 or Grade 2 rating is generally recommended for residential properties.
- Battery Life and Alerts: I wanted a lock that not only had a long battery life but also sent me low-battery alerts. This feature ensures I never get caught off guard.
Installation Process
From my experience, I found that many smart locks are designed for easy DIY installation. However, I recommend checking the compatibility with my existing door setup. Some models require specific door thickness or backset measurements. If I felt uncertain, I wouldn’t hesitate to hire a professional for installation.
Price Range
I noticed that the price for double cylinder deadbolt smart locks can vary significantly, typically ranging from $100 to $300. While I was tempted to go for the cheapest option, I realized that investing in a reputable brand with good reviews was more important for long-term security.
Customer Reviews and Support
Before finalizing my purchase, I made it a point to read customer reviews and check the manufacturer’s customer support reputation. I found that a responsive support team can be invaluable if I ever encounter issues with my lock.
In my journey to find the perfect double cylinder deadbolt smart lock, I learned that balancing security, convenience, and price is crucial. By considering the features that matter most to me and taking the time to research, I was able to choose a lock that not only fits my needs but also gives me peace of mind. I hope this guide helps you make an informed decision on your own smart lock journey!
Author Profile

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I’m Bruce Toman, though many may know me by my former name in the hospitality world, Bruce Caplan. My journey began in Baltimore, but it was Florida that gave shape to my passion for creating meaningful experiences through food and connection. I moved to the Tampa Bay area and opened a bicycle shop in St. Pete Beach. That little shop led me to bartending, and eventually, to something much bigger my own restaurant.
Since then, I’ve shifted from serving meals to serving insights. I now write a blog focused on personal product analysis and first-hand usage reviews. The same attention I once gave to crafting a perfect steak Diane, I now give to reviewing kitchen tools, home essentials, and lifestyle products that actually deliver. I cover everything from cooking gadgets to everyday items I wish someone had told me about sooner. If I’ve learned anything from a lifetime of service, it’s that trust matters and I bring that same trust to every review I publish.
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