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KAFENDA Security Chain Door Lock Review: Practical extra security for family homes?

Security Chain Door Lock Heavy Duty Latch Chain Door Lock with Spring Anti-Theft Snap Lock, Stainless Steel
4.5
[Enhanced Door Security]  Allows door to open slightly for safe observation while preventing forced entry.
[Spring Button Release]  Button must be pressed to release chain; cannot be unlocked from outside.
[Durable Stainless Steel Construction]  High-quality stainless steel resists rust with thickened plates and chain for added strength.
[Compact Precise Dimensions]  Plates 122×22mm and 62×22mm; chain 170mm; end 30mm.
[Quick DIY Installation]  Install in minutes with included 20mm screws for secure mounting.
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Door security accessory that lets the door sit slightly open for safe observation and ventilation while adding a secondary locking layer. Ideal for households seeking reassurance around visitors and deliveries. Is the KAFENDA Security Chain Door Lock the practical upgrade many families need?

⚡ At a Glance
  • Security Strength: Thickened stainless steel plates and chain resist daily wear and corrosion
  • Best for: Families with children, pets or elderly relatives who need safer doorstep checks
  • Not ideal for: Situations that require replacing a primary deadbolt or very high-security doors

Stainless steel chain lock with a spring-button snap and reinforced plates. Designed to hold the door slightly open for observation and add an extra layer of household security.


Safer doorstep checks – with spring-button snap lock

A spring button secures the chain into its catch and must be pressed to release, preventing unlocking from the outside. The snap mechanism requires direct manual action at the door.

Allows residents to open the door slightly to speak or see visitors while keeping the entrance secured against forced opening.

Durable, rust-resistant protection – with stainless steel construction

Made from stainless steel with thickened plates and a chain thickness of 1/16 inch, the materials are selected to resist corrosion and daily mechanical stress. Heavy-gauge components increase long-term stability.

Delivers reliable performance in everyday use and in damp conditions where lesser materials might corrode or weaken.

Quick DIY installation – with included 20mm screws and compact plates

Two base plates measure 122 x 22 mm and 62 x 22 mm, designed for surface mounting with the supplied 20 mm screws that give sufficient grip in timber frames. Installation fits standard door-frame layouts.

Homeowners can fit the latch within minutes using common tools, avoiding the need to call a locksmith for a simple upgrade.

✨ The 4 Key Reasons for KAFENDA Security Chain Door Lock
  1. Spring-button snap lock - Prevents external unlocking, allowing secure, one-handed release for quick checks
  2. Partial-door ventilation - Lets air circulate while keeping the entrance secured
  3. Compact plate design - Fits most door frames without obstructing hinges or trim
  4. Included mounting screws - 20mm fixings give solid grip and straightforward installation
📋 Technical Details at a Glance
  • Category: Home Improvement, Security hardware
  • Brand: KAFENDA
  • Material: Stainless steel
  • Material thickness: 1/16 inch
  • Large base plate size: 122 x 22 mm
❓ Frequently Asked Questions

Q: Can the chain be released from outside?

A: No, the spring-button design must be pressed from the inside to release the chain and cannot be unlocked from the outside.

Q: Is this suitable for households with children or elderly relatives?

A: Yes, the latch allows the door to be opened a little for safe observation and is described as helpful for children, pets and the elderly.

Q: Are screws included and are they long enough for secure fitting?

A: Yes, 20 mm screws are included and are stated to provide sufficient grip for installation.

🏆 Our Verdict

Suitable for households that want an extra layer of door security while still allowing ventilation and safe visitor checks. Stainless steel construction, a spring-button snap and compact plates make a practical, durable upgrade for family homes. Offers clear long-term value through corrosion resistance and easy DIY fitting.