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πŸ”’ defender security s 4180 doorknob lock-out device – lock with key to block keyhole access, removable and user-friendly, suitable for round doorknobs up to 2-7/8” diameter logo

πŸ”’ Defender Security S 4180 Doorknob Lock-Out Device – Lock with Key to Block Keyhole Access, Removable and User-Friendly, Suitable for Round Doorknobs up to 2-7/8” Diameter Review

8

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Average

Revainrating 3.5 out of 5Β Β 
RatingΒ 
3.4
πŸ”’ Door Hardware & Locks, πŸ”§ Hardware

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img 1 attached to πŸ”’ Defender Security S 4180 Doorknob Lock-Out Device – Lock with Key to Block Keyhole Access, Removable and User-Friendly, Suitable for Round Doorknobs up to 2-7/8” Diameter
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img 3 attached to πŸ”’ Defender Security S 4180 Doorknob Lock-Out Device – Lock with Key to Block Keyhole Access, Removable and User-Friendly, Suitable for Round Doorknobs up to 2-7/8” Diameter

Description of πŸ”’ Defender Security S 4180 Doorknob Lock-Out Device – Lock with Key to Block Keyhole Access, Removable and User-Friendly, Suitable for Round Doorknobs up to 2-7/8” Diameter

DOORKNOB LOCK-OUT DEVICE – The Defender Security doorknob lock-out device can be placed directly over the doorknob to prevent access to the keyhole. COVERS KEYHOLE – This doorknob security device is not designed to prevent turning an unlocked knob, but rather to block access to the locked keyhole, effectively keeping other keyholders out. REMOVABLE – The durable diecast cylinder is held in place with an O-ring and is removable 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 round doorknobs that have a max diameter of 2-7/8”. Note that the shaft cut-out is oval/oblong in shape and measures 1-3/4 in. x 1-1/2 in. so it may fit loosely over some doorknobs with round, 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 can be used in any situation where you want to prevent others with keys from unlocking the doorknob. This knob lock-out device is used to prevent access to a standard door knob. The maximum outside diameter round door knob that can be protected with this lock-out device is 2-7/16 inches. Gray painted finish. Diecast construction.

Reviews

Global ratings 8
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Type of review

Revainrating 5 out of 5

Not the best choice for door hardware and locks

When I received the lock it looked like it had been used. After 3 days of use, the turnkey mechanism came completely out of the lock. When I tried to put it back in the hole I couldn't turn the key.

Pros
  • Painted gray
Cons
  • Unreliable

Revainrating 2 out of 5

Best buy for door hardware and locks

My husband has dementia and keeps sneaking out the door and letting our house cats out. I put it on the back door and he can't get out. So he should go out the front door so I can see him. Love it!

Pros
  • This handle latch is used to prevent access to the standard door handle
Cons
  • weak

Revainrating 5 out of 5

All have the same lock - use the same key.

I bought 3 and the main downside is they all use the same key. Castles are by no means unique. So if you want to allow access to some door locks, also allow access to all. In my opinion it's not safe at all.

Pros
  • Mold construction
Cons
  • Definitely bad product

Revainrating 1 out of 5

Too expensive but does the job

This is a heavy duty model that will definitely do the job of keeping people off their seats! I don't have a key for the bedroom door, so if I lock it from the inside I can hardly get in. I bought this instead of buying a whole door handle lock system. This lock prevents the doorknob from turning at all, so no one can enter without turning the doorknob! Although quite expensive.

Pros
  • USE. This locking device is widely used in evictions, rentals, home sales, work places, storage handles in the home, office and many other occasions. It can be used in any situation where you want to prevent other people with keys from unlocking the doorknob.
Cons
  • Fits

Revainrating 5 out of 5

5 years opens it with a fingernail!

I have a 5 year old escape artist and I was desperate for something to keep her at home. She was able to figure out or break anything we tried to do. I was happy to find this and felt it would do what we needed. No! 3 days after receiving it she decided to try her NAIL to unlock it and to my dismay it worked. You should use a key to open it but I use my short fingernail of course and it opens it every time. Waste of money and very disappointing.

Pros
  • CLOSE THE KEYHOLE - This door knob security device is not designed to prevent an unlocked handle from turning but to block access to a locked keyhole and effectively keep other key holders out.
Cons
  • Legacy Model

Revainrating 3 out of 5

Guaranteed to work.

I made this to keep the dishonest negative stereotype of the neighbor and nosy landlord out of my room (I rent my room in the basement of a townhouse living in an apartment building). I had to change the locks 3 times and they kept coming back to my apartment. After using it it stopped completely. Somehow they got the keys to the locks which I bought myself/individually which I promptly changed. But this little beauty apparently has some kind of key that they couldn't find a duplicate for…

Pros
  • DIMENSIONS - This latching device can secure round doorknobs with a maximum diameter of 2-7/8 inch. Please note the shank cutout is oval/oblong and measures 1-3/4" x 1-1/2" so it will freely fit some doorknobs with round thin stems.
Cons
  • poorly thought out

Revainrating 5 out of 5

Each has a key in hardware

I bought one like this a long time ago but the key was compromised so I bought another one. When the new one arrived I found that the new key and old key are interchangeable. You can either open the old device or the new device with the old or new key. So if you get a new device because you need a new key, it's basically pointless. If you have a copy of your old key, you can simply use it on the new device. So I sent it back and just started sealing the keyhole with a piece of tape when I got…

Pros
  • . DETACHABLE - The strong molded barrel is held in place with an O-ring and is removed when the unit is unlocked and opened. The cylinder cannot be removed when the device is closed and locked.
Cons
  • Hard to say

Revainrating 1 out of 5

The answer to my security questions.

I have a commercial property with the necessary mailbox. The problem with the mail slot is that the door could be opened through the mail slot with the right tools. As this is a commercial listing I was not allowed to install a two key deadbolt which is against fire codes. Even if it's only locked outside of working hours. So I had an issue that bothered me every time I left, it was always on my mind. I read about 200 reviews on this and others. I thought it was a commercial cinder block door…

Pros
  • DOOR HANDLE LOCK - The Defender security door handle lock can be fitted directly over the door handle to prevent access to the keyhole.
Cons
  • Questionable purchase for seniors