Price: $31.59 - $20.78
(as of Dec 16, 2024 19:36:17 UTC - Details)

This Defender Security doorknob lock-out device is designed to be mounted directly over the entry doorknob to prevent access to the keyhole only, effectively preventing unauthorized access by key. The durable, diecast cylinder is held in place with a removable O-ring for cleaning the cylinder when the lock-out device is unlocked and open. The cylinder cannot be removed when the device is closed and locked. This lock-out device is often used in evictions, rentals, home sales, on job sites, in-home, on in-office storage room knobs to keep other keyholders out, even if they have a key to the door. It is a quicker and easier solution than replacing the entire knob and lock system on a door while still getting the protection you need. The maximum outside diameter of a round knob that can be secured with this device is 2-7/16 inch.
DOORKNOB LOCK-OUT DEVICE – The Defender Security doorknob lock-out device can be placed directly over the entry doorknob to block access to the keyhole. Note: Measure your door's handle diameter to ensure it will fit inside the lock-out device.
COVERS KEYHOLE – This doorknob security device is designed to keep the keyhole on the locked entry doorknob from being accessed, not the handle from being turned, effectively keeping other keyholders out.
REMOVABLE – The durable diecast cylinder is held in place with an O-ring and is removable for cleaning when the device is unlocked and open. The cylinder cannot be removed when the device is closed and locked.
DIMENSIONS – This lock-out device can protect rounded doorknobs that have a max diameter of 2-7/16 inch. Note that the shaft cut-out is circular in shape and measures 1-3/16 inch, so it may fit loosely over doorknobs with smaller diameter slender shafts.
APPLICATIONS – This lock-out device is often used in evictions, rentals, home sales, on job sites, in-home, in-office storage knobs and more. It is used in situations where you want to prevent other keyholders from accessing the keyhole to unlock
NOTE - Look for the keys inside the lock-out device as the may shift around during transportation
Reviewer: CG
Rating: 5.0 out of 5 stars
Title: Robust and Secure Key Lock Device by PRIME-LINE
Review: I recently purchased the PRIME-LINE Key Lock device and have found it to be a solid addition to my home security setup. This lock stands out because of its key lock special feature, which has brought an extra layer of security and peace of mind.The lock itself has a compact and manageable size, with dimensions of 3.75 x 2.25 x 2.75 inches, which made installation straightforward in the desired location. The diecast material feels sturdy and durable, suggesting that it will stand the test of time and use.Aesthetically, the gray color and finish give the device a subtle and professional look, blending well with various door styles and colors without being too obtrusive or out of place. The device style is practical and functional without sacrificing the overall appearance.The package included the lock-out device itself and two keys, which is convenient as it allows for a backup in case one key is lost, or for multiple users to access the lock. The ring controller type is a handy addition, making it easier to manage and locate the keys when needed.While the lock performs well, there are a couple of reasons why I'm giving it four stars instead of five. First, while the gray finish is sleek, it might not suit everyone's taste or exterior design, a choice of finishes would be appreciated. Secondly, while installation was relatively easy, the instructions could have been a bit clearer, especially for those who may not be as handy or experienced with installing locks.All in all, the PRIME-LINE Key Lock device is a reliable security measure that I would recommend to others looking for a dependable lock with the added convenience of a key lock system. The quality of the materials used and the included components make it worth the purchase, and I feel more secure with this device installed in my home.

Reviewer: Mark Lazar
Rating: 5.0 out of 5 stars
Title: The Perfect Solution
Review: We have very high end, custom door knobs, but needed to put a lock on a bedroom door. We agonized over how to do this without replacing the door knob or putting an unsightly lock on the beautiful, high-end door. This locking device is the perfect solution for round knobs. It's an ingenius device, which makes it impossible to open the door when it's on. There was no mounting and it locks/unlocks in seconds. We were thrilled to find such an inexpensive, simple solution.

Reviewer: Claudia Irby
Rating: 5.0 out of 5 stars
Title: Godsend
Review: This is a welcome relief for keeping wandering folks from getting out the door. Super easy to install. My only issue is that the locking mechanism comes out of it, but it's easy to slide back in, so I just keep on using it.

Reviewer: Kaela
Rating: 5.0 out of 5 stars
Title: Autistic child
Review: I bought these to keep my autistic child from eloping during vacation. They worked great and were easy to use!

Reviewer: faith teems
Rating: 4.0 out of 5 stars
Title: heavy metal and sturdy
Review: I gave this a 4 because the locking mechanism comes out easily , but you can just pop it back in, in an unlocked position and once it's in a locked position it can't come out because of the bar that crosses on the inside of this thick heavy metal. I think the problem is the plastic washer that goes around the mechanism deteriorates very easily , which allows the locking mechanism to come out when it's in an unlocked position.Overall , I have bought a bunch of these for different purposes. The thick metal bar that crosses the inside , when in a locked position , and the thick heavy metal of this outer frame will keep anyone from taking this thing off easily , if at all without a key. Also it's so close to the door itself that it will be awkward to try to get off with out a key!...great for 'roommate' circumstances , or in my case a mother with dementia ( to keep her out of rooms with important papers, etc. !!!

Reviewer: Barbara Lee
Rating: 5.0 out of 5 stars
Title: Durable
Review: I have been using this product for a few years now. My husband has Alzheimer’s and had gotten out of the house and was walking down the road. I was in a panic!!!This is when I ordered this product for my exterior doors. It has not failed to keep him from getting out. It has kept a big worry from my mind and well worth my investment. If you want to keep little ones or older ones from getting outside without your knowledge please consider purchasing this door knob lock.

Reviewer: Mindy
Rating: 5.0 out of 5 stars
Title: Extra security.
Review: I live at a huge retirement community- 15 floors high, the extra lock 🔐 gives me a better peace of mind.Kinda difficult learning how to take it off and on...but eventually it becomes 2nd nature.

Reviewer: Anna
Rating: 4.0 out of 5 stars
Title: Sturdy and easy to use
Review: These knobs are perfect to keep my husband with dementia from getting out of home while I am here or away for an errand. The only issue is you can easily pinch yourself while putting them on the door. They are quite heavy and close easily. Just be aware of your fingers!!! Beyond that, very happy with these.

Reviewer: Martin Larios Baron
Rating: 5.0 out of 5 stars
Title:
Review: Excelente método de seguridad 👍🏻👍🏻

Reviewer: Almighty
Rating: 5.0 out of 5 stars
Title:
Review: This knob lock is perfect! It’s durable, working perfectly and easy fast to use without having to change door knobs and risking causing any damage.Very helpful if you are privacy geek!

Reviewer: There are good
Rating: 5.0 out of 5 stars
Title:
Review: 2 locks I brought excellent

Reviewer: Roger Garza
Rating: 5.0 out of 5 stars
Title:
Review: lo uso en mis depas de renta. no pagas alquiler y bloqueo entrada a tu depa, asi tienen que venir a mi oficina. En viajes lo uso en depas que rento para asegurar dueño con copias llaves no entre.

Reviewer: sf auto
Rating: 5.0 out of 5 stars
Title:
Review: Good quality and served its purpose. Worth the investment, would buy again provided I even need more