CR02EN
0.96” OLED Screen，Cost-effective
All In One Access Control Terminal Built-In Controller
HTTP/MQTT Server Centralized Access Control System With
RFID/QR code/Barcode/Mobile Credential Reader
Embedded Linux OS, Multiple detection, Remote log analysis
+
Embedded Ethernet/WiFi Communication, Provide HTTP/HTTPS/MQTT Protocol
+
Embedded Relay Controller Latch/Electric Control
Support Both Exit Button & Lock Relay
Multiple Recognition Technologies
QR Code
CR02EN QR code access control support multiple format of QR code/Barcode, Enable real-time refreshing of dynamic QR codes, with limited time and access for door opening.
RFID Smart Card
Supports sector encryption for 13.56MHz cards and 125KHz
Dual-protocol offloading
and stability control
CR02EN
provides HTTP/HTTPS, MQTT protocols, and sample source code, enabling seamless integration with any third-party system platform. HTTP(S) is responsible for personnel identity verification, ensuring stability and reliability; MQTT is responsible for remote unlocking or gate opening.
- HTTP / HTTPS / MQTT communication
- Relay output for door locks and turnstiles
Automatic
Online/Offline Working
Modes Switch
Automatic Online/Offline Working Modes Switch
Never lose control – CR02EN intelligently monitors network connectivity and automatically switches between online/offline modes while keeping all data in sync.
- Host Mode: unlimited users and event logs for online management.
- Local Mode: user whitelist and local event logs for offline use.
- Auto Switch: online and offline modes switch automatically.
High-security encryption protection
The data interaction between the QR code access control hardware and software systems employs ciphertext methods, and utilizes encrypted HTTPS and MQTTS communication protocols to ensure data security. Additionally, it integrates multiple authentication methods such as signature verification and key verification, comprehensively enhancing the system’s security protection capabilities
OLED display screen
0.96-inch display screen ,Can display the card number, Times, device status, device IP address etc
Easy voice replacement
Voice output can be customized for project-specific access prompts.
Highly Integrated, Easy To Install
Time Zone Adaptation
The system supports global time zone adaptation for distributed projects.
WEB Configuration Cross-
Platform Compatibility
Web-based configuration helps manage and debug CR07EU across platforms.
Configuration
Application Scenarios
Visitor
Colleges
Community
Hospital
Server Room
Office Building
Why Choose Us
12 years R&D
experiences
6400 cooperative
clients
88 honors and
patent certificates
Support deep
customization
7*16 online
support
365-day after-sales
guarantee
Specification
Name | QR Code Access Controller |
BASIC | |
Model | CR02EN |
Networking Method | Ethernet |
Identification Method | QR code / RFID card |
Output Method | Relay signal |
Operating system | Embedded Linux |
Storage | Offline User Capacity (100,000 QR codes, 100,000 IC cards), 100,000 offline records |
Storage Memory | 128M Flash |
Protocol | http、https、MQTT |
Input Output | Two inputs (for connecting buttons to open the door and door sensors); One infrared anti-tamper alarm sensor output; One relay output (can be used to control electric locks) |
Anti-tamper Alarm (optional) | Support local alarm and signal output, which can be transmitted to the background server in real time |
Extended Communication Interface | Wiegand output or RS485 output (optional, choose one, default Wiegand output) |
Display | OLED 0.96-inch display |
Physical Dimension | 115.08*75.1*15mm |
Material | ABS+ Tempered glass |
Weight | 112.2g |
QR CODE PARAMETERS | |
Reading QR code types | QR Code, Data Matrix, PDF417 etc. |
Reading Accuracy | ≥7mil |
Recognition Speed | <200ms |
Reading Angle | Angle of rotation 360°，angle of elevation ± 55°，Angle of declination ± 55° |
Scan Angle | 72°（level）, 54°（vertical）, 84°（Diagonal） |
Recognition Distance | 5-20cm |
QR Code Support Range | 1024 characters |
PROXIMITY CARD | |
Supported Card Reading Types | Support ISO1443A/ISO1443B protocol card |
Working Frequency | 13.56MHz |
Card Reading Distance | less than 5CM |
EM card (optional) | Support 125K EM card |
ELECTRIC | |
Operating Voltage | DC 6V~25V |
Working Current | 200mA (12V power supply) |
Stand-by Current | 140mA (12V power supply) |
Relay Load Capacity | 1A |
ENVIRONMENTAL | |
Waterproof Level | None |
Static Electricity Level | Air discharge ±12KV, contact discharge ±6KV (power supply needs to be effectively grounded) |
Operating Temperature | -20°C to 60°C |
Storage Temperature | -40°C to 80°C |
Relative Humidity | 95%（Does not condense） |
Ambient Lighting | Sunlight at noon, low light source at night |