Samsung SHS-3321 Digital Door Lock Review

You probably recognize Samsung for their popular TVs, mobiles, or other electronic devices. But do you know that they produce some of the most top-class security lock systems for doors as well?

The Samsung SHS-3321 is a remarkable piece of digital door lock that can secure your place for good. It has got all the advanced features that make it super reliable, easy to install, and easy to use as well. And for its price range, you truly can’t get a better deal than this one.

Let’s check out the Samsung SHS-3321 digital door lock review to get a clear view of everything about this digital lock.

Samsung SHS-3321 Digital Door Lock Review

As a digital lock, having excellent security is not enough to be on top of the list. The SHS-3321 has a few fantastic features that give you such a tremendous user experience. Down below, we’ll have a look at some of its key features.

Advanced Security 

This great lock can be programmed with up to 71 user codes and RFID tags for maximum convenience. Once closed, it gets locked automatically, which is super handy. And thanks to the broader code storage, you don’t have to worry about sharing the same code with multiple people.

The SHS-3321 also doesn’t come with a keyhole like the previous models, and that adds better surveillance. So, no need to worry about losing the keys or getting them in bad hands.

Another unique feature about this digital lock is that you need to swipe your finger across the touchpad and push 2 randomly generated numbers. That removes any trace of your fingerprint from there and makes it impossible for the thieves to guess the code by reading your fingerprints.

It is also designed to last you for a very long time, and it’s operated with emergency power contact from the batteries. You’d need 4 AA size batteries for operating this lock.

Smart Alarm

There’s a fire alarm integrated into this lock, which is a pretty unique thing that you won’t find in most digital locks available out there. This alarm is designed to go off and unlock the door at the same time for a quick and safe exit.

Also, if anybody tries to mess with the lock, the alarm goes off, which is an amazing feature. Another great thing about this digital lock is that after putting the wrong code 5 times, the lock will stop operating for 3 minutes. And to be real, it’s more than enough to throw a burglar off guard.

Samsung SHS-3321 digital door lock review

Ease of Use

This Samsung lock is perfect for everyday use as it’s super easy to operate. It comes with a digital touch screen that allows for faster and easier access. That way, you can say goodbye to the annoying analog numeric keypad, which feels super stiff.

Not to mention the RFID makes it even faster for you to unlock the door as it takes only seconds to get access to the door. And thanks to the magnetic sensor, you won’t have to worry about leaving the door unlocked anymore as it’ll be locked automatically.

However, there’s no way to use a key like the SHS-3320 and all the other previous models, which is a pretty big change. But that takes out the risk of losing it, and with super fast access using 71 possible user codes and RFID tags, who needs keys anyway?

Build Quality

There’s no point in having a door lock if it’s not sturdy. Luckily, with the SHS-3321 digital door lock, you won’t have to deal with any of those issues. This lock is made of Zn, Al, Polycarbonate materials with rigorously tested construction, which guarantees maximum surveillance.

It’s completely bump-proof and pick-proof, and that takes out the risk of burglary. Also, this lock is weather-resistant as well, and water and dust resistant features keep it functional no matter what.

Echo Dot (2nd Generation) - Smart speaker with Alexa - Black
  • Echo Dot is a voice-controlled speaker that uses Alexa to play music, control smart home devices, make calls, answer questions, set timers and alarms, and more.
  • Play music from Amazon Music, Apple Music, Spotify, Pandora, SiriusXM, TuneIn, and iHeartRadio.
  • Call or message family and friends hands-free, or drop in from the Alexa App to your Echo device.
  • Controls lights, locks, thermostats, and more with compatible connected devices.
  • Use the built-in speaker, or for bigger sound, connect to speakers through Bluetooth or audio cable.

Easy Installation

This lock is super easy to install in place, and that way, you can start using it right away. It’s super easy that you can do it for yourself even if you haven’t installed a lock before. 

However, it’s recommended that you follow the owner’s manual to get a proper understanding of what you need to do rather than rely on YouTube tutorials. Once it’s in place, you won’t have to worry about your room’s security anymore.

Best Alternative I Do Recommend:

Narpult Fingerprint Smart Lock, Keyless Entry Door Lock, Electronic Deadbolt Door Lock, Bluetooth Keypad Digital Lock - App Control, Biometric, Fobs, Passcodes and Keys. - Satin Nickel
  • More than just a lock - BHMA authenticated, not only bring you safety and reliability, but also bring you a brand new smart world. Five way to unlock your door - APP, Keypad, Fingerprint, IC Card and mechanical keys and works with Amazon Alexa.
  • Your smartphone is now a smart key and more - Lock and unlock your door, create virtual keys for guests, and keep track of who comes and goes, all from your iOS or Android smartphone(Bluetooth).
  • Say bye to forgetting to close your door - Customizable automatic door locking after 5-120 seconds for peace of mind. One-touch locking and Passage mode featuring you to balance convenience and security.
  • Super easy to install - Best solution for Rental Hosts & Homeowners, install in minutes with only a screw driver. Suitable for door thickness of 1.38 in. to 2.16 in. (35mm-55mm)
  • What you get - 1x Keypad, 1 x Inside receiver, 1 x Accessory box. For any issue, please e-mail to Narpult service, Powered by Narpult Smart, Smart for your life!

Sleek Design

Let’s get real for a moment; if you’re spending your money on a digital lock, you wouldn’t want to have a big and weird looking lock on your door. A digital lock should look modern, and it should blend with the door’s design seamlessly.

And the SHS-3321 digital door by Samsung is just the lock for that. It’s super sleek, and it has a very simple but classy design to it. If you are someone who loves simple design with solid colors, this lock is just the perfect one for you. You’ll love the color, finish, and every aspect of it, which is a guarantee.


  • Ensures maximum security
  • Smart user interface
  • Ease of installation
  • Water and dust resistant
  • Incredible battery life


  • Doesn’t come with Bluetooth or Wi-Fi capability

Best Samsung alternative you may consider: 

Final Words

As you went through the Samsung SHS-3321 digital door lock review, you can see how it’s an amazing lock that ensures maximum security and surveillance. 

With a digital lock, it’s all about getting the maximum security while making sure that it’s suitable for day to day usage. And with the SHS-3321 digital lock, it’s everything that you can ask for in a digital lock. Give it a try, and you won’t be disappointed with its quality or performance.

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