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Samsung Ezon SHS-3321 Keyless Smart


R eplacing your old door lock with a smart one can help you a great deal in improving the security of your home and thus feeling much safer. Nevertheless, since there are so many models available, you may feel a little confused about choosing a great product, and this is why we recommend you buy a product manufactured by a reliable company such as Samsung. The Samsung Ezon SHS-3321 Digital Door Lock comes with all the features you need for a safe home. The product can be purchased at a reasonable price and it comes with a user-friendly design that makes it easy to operate by all the family members.


The main purpose of such a device is to provide an increased level of security and this is the case with the model we’re reviewing. Besides the anti-theft and double authorization modes that offer an additional layer of safety for the entire family, the device has a random security code mechanism as well, thus preventing the intruders from copying the PIN code. Therefore, with the help of this security device, you will not have to worry about the safety of your house because it surely won’t disappoint you. Some of its security features are:

  • Random Code – Before you enter the pin, 2 random number will appear. This will throw off the potential intruders and remove the possibility of smudges on the keypad
  • Fire Warning – In case the system has noticed a sudden temperature increase, it will activate the alarm. Then, it will automatically unlock to save you time
  • Preventive – In case the code has been entered wrong 5 times, an audible alarm will begin and the lock will no longer work for 3 minutes

Samsung Ezon SHS-3321 Keyless Smart Image

Main features

One of the most important features of this unit is the automatic locking, so whenever the door is closed, the system automatically locks it. This feature is very helpful in case you forget to lock the door when you arrive home or leave the house. Another great feature of this particular model is the fire detection sensor that will announce to you whenever there is a fire in the house. Some of its features are:

  • Anti-theft Mode – The anti-theft mode was specially designed to keep away the intruders, so if there’s someone who tries to press a button, you will hear a sound that will let you know about this
  • Double Authorization – For increased security, the double authorization feature enables the possibility to use the lock with both a password and a card whenever you want to unlock it
  • Back-up Battery – In what concerns power outages, you shouldn’t be worried because the system is equipped with a 9V battery backup
  • Samsung Video Door – It’s compatible with the Samsung video door phone or your home automation system that allows you to unlock the door
Dimensions 17.7 x 4.7 x 12.6 inches
Weight 10.14 pounds
Color Silver and Black
Battery 8 AA alkaline batteries
Battery Back-up
Method of Opening Keypad, fingerprint, and RF ID tags
Automatic Locking
Traditional Manual Keys
Warranty 1-Year

Ease of use

Even though it offers remarkable home security, it isn’t complicated to operate at all. The unit is digital, so you can use a 4 to 12-digit number combination, according to your preferences. Its particularities are:

  • Adjustable – It features an adjustable keypad volume that features 3 levels, as well as the mute mode
  • Reliable – The battery backup will maintain the continuous operation of the system even if there’s a power outage, meaning that you will continuously have your house safely secured
  • Indicator Lights – You don’t have to continuously check the status of the battery because the low battery warning will let you know

Samsung Ezon SHS-3321 Keyless Smart Image

Design and installation

The device comes with a stylish design that works well on any entrance door design, being very modern and sleek. The touchpad screen is very simple and attractive, with no complicated buttons or commands. In what concerns the installation procedure, it comes with all the instructions included for helping you achieve fast results, featuring a universal deadbolt with selectable sizes.

Warranty and support

The product is covered by a 1-year warranty against defects in material and workmanship, so in case you encounter any problems on this matter, the manufacturer will replace your product. Furthermore, in case you want additional support, you can visit the official website or contact the customer service to help you find out more about the product.

Final Thoughts

As shown, this model features great security features, as it doesn’t only require double authorization before allowing access into the house but comes with an integrated alarm that sounds if the code is introduced wrong 5 times in a row. Moreover, in case of a fire, a special sensor will transmit the information, triggering an alarm, so you can act quickly and reduce the damages. And, while it is true that the warranty isn’t very generous, its construction is sturdy enough to survive the test of time, so you will probably deal only with minor repairs.

Logan Hewitt
Logan Hewitt
Logan was born and raised in Bakersfield, California, one of the most affected American cities by pollution, experiencing firsthand the phenomenon’s dangers. He worked in retail for a small electronics shop for 5 years, where he had his first experience with air purifiers. With his interest in technologies that are meant to improve life quality and the technical skills he gained with the passing of time, Logan is able to provide readers with in-depth analysis of life-changing devices.