Smart Door Locks: Home Security System
Abstract
With the global smart home penetration rate exceeding 72% in 2025, smart door locks have evolved from a single security device to a home security hub. Based on the Ministry of Public Security GA 374-2019 standard and UL laboratory test data, this article combines the technological breakthroughs of leading brands such as Dessmann and Kaadas to systematically analyze the five core dimensions of biometrics, energy management, and whole-house linkage, revealing how smart door locks redefine security boundaries through technological innovation.
Iterative revolution in security performance
1.1 Physical defense line of C-class lock core
As the current highest security standard, the C-class lock core adopts a double-row serpentine groove and anti-drill steel column design, which can withstand 270 minutes of professional tool damage (Ministry of Public Security GA 374-2019 standard). Dessmann Q50F Max is equipped with a 304 stainless steel anti-saw lock tongue with a shear strength of 620MPa, which is 300% higher than the physical protection performance of traditional locks.
1.2 Dynamic defense system construction
Smart door locks have formed a three-dimensional defense network of "real-time monitoring-active defense-intelligent response":
The virtual password function of Kaadas K20 Pro reduces the correct recognition rate of bystanders to 3.2%
Xiaomi Fully Automatic Pro starts 30 minutes of locking after 5 incorrect passwords, and cooperates with remote alarm push
A flagship model is equipped with military-grade EMC protection, which can resist 100,000 V/m strong electromagnetic interference
Industry standard reference: Ministry of Public Security Electronic Anti-theft Lock Standard GA 374-2019
Click to learn more about Smart Door Locks
Paradigm shift of biometric technology
2.1 Multi-dimensional liveness detection technology
Semiconductor fingerprint recognition reads the characteristics of the dermis through capacitive sensing, and cooperates with multi-dimensional algorithms to intercept 3D printed fingerprint film attacks. TCL K7G Plus's 3D structured light face recognition system still maintains 98.7% recognition accuracy in dark light environments.
2.2 Innovation of composite verification mechanism
Dessmann Q5M Plus pioneered the "fingerprint + dynamic password + mobile phone APP" triple verification, which extended the cracking time from 8 minutes in single mode to 47 minutes. A bank data center adopted a similar solution and achieved zero cracking records for 5 consecutive years.
Whole-house linkage scene revolution
3.1 Smart security ecosystem construction
Smart door locks that support the Matter 1.2 protocol can be linked to smoke alarms and cameras:
Automatically unlock the escape route and push the best route in case of fire
Abnormal unlocking triggers camera tracking, and event traceability is improved by 80%
Linked with Apple HomeKit geo-fence to achieve "automatic arming when leaving home"
3.2 Upgraded non-sensing interactive experience
Huitelong cloud security lock is equipped with PIR human body sensor, which automatically wakes up the system within 3 meters, realizing the ultimate experience of "door opening when people arrive". When linked with lights and air conditioners, preset home scenes can be started simultaneously.
Summary
The technological revolution of smart door locks is reconstructing family security from three dimensions.With the implementation of the GB/T 44602-2024 standard, smart door locks will be integrated into the smart city network at an accelerated pace and become the security foundation of digital life.