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Samsung SHS-3321 Digital Door Lock, Black, Keyless, Electronic, Deadbolt

4.1 out of 5 stars 327 ratings

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  • DETAILS » Program up to 71 user codes and RF ID tags. Fits doors 35mm to 55mm thick. Automatic locking. Compatible with certain NFC items. Battery operated with emergency power contact.
  • DESIGN » Samsung door locks have a sleek modern design which would complement any interior or exterior door in the residential home, apartment, or commercial business office building.
  • EASY TO USE » Use the digital touchscreen numeric keypad to enter a password or RFID faster than you can turn a key. Shut the door and the magnetic sensor automatically locks the door for you.
  • EASY INSTALL » Installs on standard 161 prep doors therefore no drilling (161 Prep is a cylindrical lock prep with a 2-1/8″ hole at 2-3/4″ backset, where the door edge prep is 1-1/8″ x 2-1/4″.), universal deadbolt to adjust between 60mm and 70mm, can be installed on the right or left hand side.
  • SECURITY » Rigorously tested construction, random security code feature, bump and pick proof, intrusion alarm, PSB fire tested and fire detection sensor, anti tampering lock out. The lock has your back.

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Product description

► Enhanced Security

Random Security Code
- Before entering pin, 2 random numbers to push will appear. Throws off on-lookers and spreads your fingerprints around the keypad to prevent guessing of your passcode.
Double Authentication - Both password and RFID tag are required to unlock the door
Double Locking - Use this feature to prevent the lock from being unlocked from outside, even by a key.
Anti Theft - Secure your home when your family is away. An alarm is set off when the lock is operated from inside; a sign of a thief trying to flee.
Mischief Prevention - After 5 failed entry attempts a warning sounds and the lock stops operating for 3 minutes.
Intrusion Alarm - If the door is opened while still locked an alarm will sound making the intruder less likely to stay.
Fire Warning - If temperature reaches a certain degree the thermal sensor will activate the alarm. The lock will auto unlock helping you to escape the fire.
Emergency Power - No battery; no problem. Simply use a 9V battery to power the lock from the outside panel and enter as usual.
Auto Locking - Magnetic sensor enables door to automatically lock after 3 seconds of being closed.
Auto Polling - Skip wake up/random security code when using RFID to enter.
Low Battery Warning - When batteries are low, the lock will play Fur Elise after every unlocking of the door.

► Specifications

Max User Memory - 71 user pin/RFID
Door Thickness - From 35mm to 55mm
Lockset - Tubular,handleless,deadbolt
Lock Material - Zn, Al, Polycarbonate
Fits 161 prep door - Cylinder 2 ⅛ inch diameter
Universal Deadbolt - Fits 60mm and 70mm
Battery Life - 12 months at 10 uses per day
Battery Type - 4 AA alkaline batteries
Lock Size - Exterior 2.7 x 7.1 x 1.4, Interior 2.7 x 7.1 x 1.5 inches (WxHxD)
Operating Temp -25°C to +60°C
Water and dust resistant

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Most helpful customer reviews on 3.3 out of 5 stars 201 reviews
Mike Wilson
1.0 out of 5 stars EXTREME cracking issues.
24 October 2019 - Published on
Verified Purchase
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1.0 out of 5 stars EXTREME cracking issues.
Reviewed in the United States on 24 October 2019
The lock itself works how I would expect. However, the front face is cracked almost to the point of it not being readable. Direct sunlight for a few hours a day, but normal temps humidity (Charlotte,NC). No reason at all it should be cracking like that. Very disappointing, and the "warranty" process seems like I'd have to send it to 1 place in the US at my expense. No problem, except of course its on my front door, so I can't exactly be without a lock for 3-4 weeks while this process takes place. And if I buy another one, I won't put this one back on the door!

Overall, I would not (will not) purchase this product, or a Samsung lock, again.
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38 people found this helpful
Nick P.
5.0 out of 5 stars Great lock!
30 March 2017 - Published on
Verified Purchase
43 people found this helpful
1.0 out of 5 stars Nice looking but not reliable
21 October 2018 - Published on
Verified Purchase
16 people found this helpful
5.0 out of 5 stars Great RFID Lock
10 May 2017 - Published on
Verified Purchase
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5.0 out of 5 stars Great RFID Lock
Reviewed in the United States on 10 May 2017
After living abroad for so long, I've grown accustomed to automated smart locks and RFID locks. Coming back stateside, my collection of keys grew tenfold. To slim my pockets, I started by replacing my traditional locks with the EZON line of products. Although they don't tie into my home automation system (they're just RFID locks), they're easy to install, program and the price is just right. In the future, I'll probably upgrade to something I can command with a phone but with my kids being devious pranksters, I don't want to introduce that technology to the household just yet. Anyway, each lock took approximately 15 minutes to install. The instructions weren't difficult and there's a few youtube videos on the net to help out. I utilized the existing holes that my manual deadbolts used. The only part that made me cringe a little was when I chipped away at my new doorway molding to make space for the magnetic sensor. Overall, the lock operates smooth. No problems using the touchpad, RFID tags, cards, or stickers. I even programed my old RFID tag from Korea into the system. I would buy this product again if needed.
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29 people found this helpful
Sean Stewart
4.0 out of 5 stars Cool lock; has some quirks; door modifications might be necessary
6 September 2018 - Published on
Verified Purchase
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4.0 out of 5 stars Cool lock; has some quirks; door modifications might be necessary
Reviewed in the United States on 6 September 2018
The lock functions well, but the overall installation took about three hours and required me to use a Dremel to alter the edge bore of the door (the hole through which the deadbolt itself travels). A couple millimetres really made a difference ...

The reason why I'm not giving the product a 5/5 is because it lacks ability to disable the annoying security alarm feature without disabling the auto-lock feature.

If you connect and set up the supplied magnetic sensor to the main logic board, open the lock manually using the turn switch after it automatically locks itself, and proceed to open the door (breaking the magnetic contact), the lock will make an alarm sound.

It needs to be disabled by entering a user code or by using an RFID tag.

Because I still forget to press the unlock button before exiting, I've hung one of the RFID tags next to the door so that I can quickly disable the alarm when I unlock it manually.

(yes, I know my door's dirty: this apartment's been abused by tens of people before me.)
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7 people found this helpful