Lockey 3830DC

Double Combination Mechanical Keyless Passage Knob Lock

Reviews (2) | Customer Questions (7)


Double the locks, double the protection! The Lockey 3830DC double combination knob lock is keyless and mechanical so no more keys to lose. Features auto-locking and passage functions for times when you need instant security inside and out, or want family and friends to enter and exit freely.

SKU: 3830DC
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  • Double Combination Passage knob lock, lever model also available
  • Mechanical, keyless deadlocking spring latch
  • One user code, thousands of possible combinations
  • Auto-locking function
  • Passage mode
  • Reversible handing
  • Adjustable backset latch
  • Covers standard 2 1/8” hole
  • Zinc-plated steel body
  • Teflon coated stainless steel interior components
  • For Exterior and Interior Use
  • Weather Resistant
  • Available in Marine Grade Finishes
  • Marine Grade recommended for saltwater environments
  • Lifetime Mechanical Warranty
  • Need something more heavy duty industrial strength? Try the Lockey 1600DC
  • Looking for a medium duty choice? Try the Lockey 2830DC
  • Extension kits are available

The Lockey 3830 Double Combination Passage Knob Lock is perfect for securing a door, gate, or facility and keeping your property protected. All it takes is your unique code and a twist of the knob to open. Double combination means you have to enter the access code for each side of your door. Great for beach access and pool gates where you want to control who is coming in and out of the property. The lock is keyless and mechanical so you don’t have to worry about keys getting stolen, duplicated or lost! Customize lock access with convenient auto-locking and passage mode features. Auto-locking ensures your door or gate is securely locked every time you close it. Passage mode allows users to come and go as they please without needing to use the entry code. Ideal for backyard family gatherings. Weather resistant and built from zinc plated steel, the lock holds up equally well in both interior and exterior environments. Available in Marine Grade finishes to protect the lock when installed in a salt-air location.

If you have a heavier door or want more heavy duty industrial strength that stands up to a corporate office environment with people constantly using the lock, check out the Lockey 1600DC.

If you want a medium duty option like for a backyard pool gate, where there isn’t much foot traffic, take a look at our Lockey 2830DC.


6 5/16 (H) x 1 3/4 (W) x 2 1/4 (D), Total Coverage with Trim Plates: 7 (L) x 2 1/2 (W)

Door Thickness Minimum

1 1/8 in.

Door Thickness Maximum

2 in.

Code Length

2 to 5 digits

Code Capacity


Door Handing


Handle Type


Door Opening


Door Prep

Standard 2 1/8 in. Cross-Bore




Jet Black Marine Grade, Satin Chrome Marine Grade, Satin Nickel, Oil Rubbed Bronze


Zinc-plated Steel

Access Type

Keypad – Digits

Locking Device

Cylindrical Latch

Lock Features

Auto Relocking, Passage Mode






Weather Resistant


Lifetime Mechanical


5 lbs

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5 out of 5 stars

2 reviews

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What others are saying

  1. Owner

    ortega peter (verified owner)

    It’s great system but if I need to change it to Key function is it possible

    (0) (0)

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  2. Great Product!

    Douglas Cousins (verified owner)

    I installed the LOCKEY 3830DC on an exterior metal gate at my daughter’s town home. Setting the combination and installing the locks was straight forward with the instructions provided. The ability to set one or both locks for easy access (doesn’t relock after opening is very handy. The locks look nice and the girls are very happy with their new locks that replace double dead bolt locks. No more keys!!

    (0) (0)

    Something wrong with this post? Thanks for letting us know. If you can point us in the right direction...




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Customer Questions & Answers

  1. Q I have this lock and I need replacement bolts. Who do I contact? answer now
    Asked by Rich Carvill on November 22, 2023 11:06 AM
    Answered by the admin

    If you need replacement bolts for your Lockey product, you may contact Lockey directly at 989-773-2363, option 1. They will be able to assist you in getting the replacements you need!

  2. Q What is the maximum number of digits that can form the entry or exit code? answer now
    Asked by C Ronald Fetzer on April 15, 2021 6:09 PM
    Answered by the admin

    By default, the code can be up to 5 digits long. However, you can purchase additional code pins for the lock that can be installed and used to extend the length of the code up to 8 digits. 

  3. Answered by the admin

    This lock is fully mechanical and does not require any power source to operate.

  4. Answered by the admin

    Please see the link below to download a copy of the 3830 installation instructions and mounting template.

    Lockey 3830 Instructions and Template

  5. Q Will this lock work on a 2" thick gate?? answer now
    Asked by Jimmy Cates on January 6, 2020 5:07 PM
    Answered by the admin

    It certainly can work as long as it is no more than 2" thick. If it is thicker than this, you may need to purchase a thick door kit to install this unit. 

  6. Answered by the admin This lock is double-sided, meaning that a code is required to both enter and leave the door. This is a single door lock and not a 2 lock bundle.
  7. A

    It is mechanical so it does not have a heat or cold rating as it will operate in any weather. 

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