CR07EU QR Code Access Control System: Detailed Introduction to Advantages and Features

Table of contents：

I.QR Code Scanning Functions

1.Fast scanning speed

2.360-Degree Rotational Scanning:

3.Reliable Scanning in Strong and Low Light:

4.High-density code recognition:

5.Specific-Purpose QR Code Recognition:

6.Offline Time and Use Limits:

7.Anti-Freeze Scanning:

II.Card Swiping Functionality

III.Advantages of Embedded Linux QR Code Access Control

1.Strong Extensibility:

2.Superior Network Compatibility:

3.Robust Communication Protocol Support: 

4.Large Storage Capacity  

5.Local Log Functionality:

IV.2-Inch Screen Functions and Uses

V.Suitability for Multiple Scenarios

VI.Other Features

1.High Stability:

2.Scratch-Resistant:

3.Domestically-Produced CPU:

4.Outdoor Waterproofing:

5.Multiple Protections:

6.Wi-Fi and Ethernet Combo:

7.Text-to-Speech (TTS):

8.Simple Debugging:

VII.Terminal Wiring Description

VIII.Software Integration Advantages

1.Unlimited Integration:  

2.Simple Integration:

3.Data Security:  

4.Signature Verification:

5.Integration Flexibility:

6.Unified Interface:

IX.Service Advantages

1.Dedicated Service:

2.Customization:

3.Strong Compatibility:

4.Rapid Response:

X.Success Stories

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As a leading manufacturer in the QR code access control sector for 11 years, all our products are independently developed. We are honored to be recognized as a National High-Tech Enterprise. Our company strictly adheres to quality control, with all products manufactured in accordance with ISO9001 standards. If you have a project involving QR code access control, congratulations—you've come to the right place.

Today, we introduce the CR07EU, an all-in-one QR code access control unit featuring a 2-inch screen and voice capabilities. It is primarily designed for software developers and system integrators working on high-end projects such as Class A office buildings, villas, and private clubs, helping them deliver complete solutions to their clients.

Let's explore the features of this QR code access control system.

I.QR Code Scanning Functions

1.Fast scanning speed:

This QR code access control system has a scanning recognition speed of 0.1 seconds. However, in actual access control applications, to prevent overly fast scanning from generating a large amount of duplicate QR code data, which could overload the server and cause incorrect limit checks, we have set a time interval restriction for scanning the same QR code. This prevents duplicate data and ensures a better user experience.

2.360-Degree Rotational Scanning:

To ensure every user can quickly scan and open the door, the device supports scanning from any angle, whether head-on, tilted, or with the phone rotated 360 degrees.

3.Reliable Scanning in Strong and Low Light:

The CR07EU can scan sensitively in the bright glare of direct outdoor sunlight. In dark environments, its dual fill lights next to the lens activate automatically, enabling it to recognize even paper-based QR codes and ensuring stable performance in no-light or low-light conditions.

4.High-density code recognition:

  The CR07EU QR code access control all-in-one device supports mainstream QR code formats such as QR Code and Hanxin Code. The maximum capacity for custom-generated QR codes by software platform providers is 800 characters, with a QR code reading precision of ≥7mil.

5.Specific-Purpose QR Code Recognition:

   For customer projects with specific requirements for QR code recognition, our company can assist in integration and testing to meet project application needs, such as scanning health codes for door access, recognizing public transport codes for door access, or using QR codes containing identity information for door access by construction site laborers.

6.Offline Time and Use Limits:

The CR07EU can validate permissions online, restricting access by time and number of uses. It can also enforce time and use limits for whitelisted and shared access codes even when offline.

7.Anti-Freeze Scanning:

Equipped with a dual-watchdog system and multi-threaded status monitoring, the CR07EU effectively prevents system freezes during scanning.

II.Card Swiping Functionality

The CR07EU QR code access control system supports ISO 14443A card/ISO 14443B card recognition functionality, capable of reading physical card numbers, IC card sectors, and CPU card file content. It features fast card swiping recognition speed, no system crashes during card reading, and supports QR code configuration to prevent card duplication, as well as the ability to reject NFC simulated cards.

III.Advantages of Embedded Linux QR Code Access Control

All our QR code access control systems run on Linux. Here are the advantages:

1.Strong Extensibility:

Compared to systems based on an MCU architecture running FreeRTOS, an embedded Linux system supports third-party library integration. This is crucial for high-security projects where the third-party system often requires devices to support their encapsulated libraries.

2.Superior Network Compatibility:

In complex network environments like university campuses or government intranets, MCU-based systems can experience unexplained connection failures. In contrast, a Linux-based all-in-one unit operates stably in such complex networks.

3.Robust Communication Protocol Support: 
The Linux-based system not only supports HTTP and MQTT but also the more secure HTTPS and MQTTS protocols.

4.Large Storage Capacity  

This Linux-based QR code access control system supports offline storage of 100,000 white list entries. Even at full capacity, door opening takes only 0.5 seconds. The local white list is secure and reliable, capable of storing user names, card numbers, and other information, and supports offline schedules and offline access limits.

5.Local Log Functionality:

When the device behaves abnormally, local log files can be retrieved to help system integrators and software platform providers quickly diagnose the issue.

IV.2-Inch Screen Functions and Uses

This device comes with a 2-inch HD IPS screen. Besides displaying network status, it supports two modes for different application scenarios: 'Passive Scan' and 'Active Scan'.

Passive Scan Mode: Typically used by system integrators who develop their own backend. The user generates a QR code on their phone and presents it to the device's scanner.

Active Scan Mode: The device screen generates a QR code, which the user scans with a mobile app or mini-program to open the door.

Customizable Display: The background image, text, and company logo can be changed to reflect the corporate image.

V.Suitability for Multiple Scenarios

With a built-in relay, this access control unit can directly control electric locks or turnstiles, making it suitable for visitor management, tourist attractions, access control management, and sharing-economy projects.

VI.Other Features

1.High Stability:

 An independent watchdog chip monitors the hardware's operational status, preventing software errors or infinite loops caused by external interference and ensuring the system can reset and operate reliably 365 days a year.

2.Scratch-Resistant:

The panel is made of 9H tempered glass, which prevents the wear and tear seen on acrylic panels over time, maintaining both aesthetics and functionality.

3.Domestically-Produced CPU:

This device uses a high-performance, domestically-produced CPU, making it more secure and suitable for bidding on state-owned and central enterprise projects.

4.Outdoor Waterproofing:

The product has an IPX7 waterproof rating, making it suitable for direct outdoor installation without fear of rain or humid environments.

 It includes anti-static, reverse polarity, and incorrect wiring protection. This prevents damage from accidental miswiring, reducing disputes over warranty claims due to human error.

The unit uses a dedicated Wi-Fi module compatible with multiple router brands and is also equipped with an Ethernet port, allowing customers to choose their preferred connection method. It offers fast, stable network connectivity.

The CR07EU offers optional TTS functionality, which converts text to voice for dynamic audio announcements, meeting the needs of developers who require voice broadcasting features.

The device supports remote online debugging and upgrades, simplifying after-sales maintenance for software platform providers and system integrators.

VII.Terminal Wiring Description

The CR07EU's wiring terminal includes standard connections plus inputs for a door sensor and tamper alarm. It also reserves an RS485 output (for controlling elevator systems or connecting to a security module) and an Ethernet port. Please refer to the wiring diagram for details.

VIII.Software Integration Advantages

1.Unlimited Integration:  

This QR code access control system supports multiple protocols including HTTP/HTTPS/MQTT, with no restrictions on development languages or operating systems, enabling integration with any third-party software platform. For high-security software platforms, HTTPS protocol can be used; for projects with a large number of connected devices, MQTT protocol can be employed; and for projects requiring high ticket verification accuracy, a dual-protocol solution combining HTTP and MQTT can be implemented.

2.Simple Integration:

We provide sample source code in common programming languages and clear, detailed protocol documentation. An engineer with web server development experience can complete the integration in as little as 8 hours for projects with simple logic and fewer features.

3.Data Security:  

Software platform providers or system integrators can directly integrate with the QR code access control hardware to enable remote door opening. Data transmission does not pass through the manufacturer's cloud server, ensuring customer data security.  

4.Signature Verification:

Platform providers and system integrators can define a private key for signing, further enhancing data security.

5.Integration Flexibility:

For platform providers that do not require independent development of access control functionality, if they need to retrieve QR code access control door opening data, we can provide a QR code access control software installation package and customize the interface integration according to the mutually confirmed requirements documentation, reducing development workload and multi-platform integration complexity.  

6.Unified Interface:
All our QR code access control products use the same standard interface protocol. This allows developers and integrators to switch to other models from our company for future projects without needing to reintegrate.

IX.Service Advantages

Here's how we support software developers and system integrators with our technical services:

1.Dedicated Service:

A well-structured departmental organization ensures each team is responsible for its tasks. For customer project customization and software integration, we assign technical personnel to provide one-on-one support to ensure project progress.

2.Customization:

All software and hardware products are developed in-house, allowing for customization based on client project requirements.

3.Strong Compatibility:

When upgrading or iterating products, the company ensures backward compatibility with previous devices.

4.Rapid Response:

During business hours, our technical team responds to after-sales inquiries within 5 minutes. During off-hours and holidays, the response time is within 30 minutes.

X.Success Stories

Since our founding, we have successfully completed over 6,000 projects and have collaborated with renowned companies such as Tencent WeCom, China Mobile, and Hikvision. Our products are adapted to a wide variety of application scenarios and needs. Friendly Reminder: If you are interested in Cerberus QR code access control systems, please add our customer service on WeChat to get more product information. WeChat ID: Acerberus