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Access Control Card Readers
  • ISO-7816 USB Floppy IC Chip Smart Card Reader Module With Free SDK MCR3521-M
  • ISO-7816 USB Floppy IC Chip Smart Card Reader Module With Free SDK MCR3521-M
  • ISO-7816 USB Floppy IC Chip Smart Card Reader Module With Free SDK MCR3521-M
  • ISO-7816 USB Floppy IC Chip Smart Card Reader Module With Free SDK MCR3521-M
ISO-7816 USB Floppy IC Chip Smart Card Reader Module With Free SDK MCR3521-M
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ISO-7816 USB Floppy IC Chip Smart Card Reader Module With Free SDK MCR3521-M

  • 1 - 49 Units
    $14
  • 50 - 499 Units
    $10
  • >= 500 Units
    $8.50

Customization:

Customized packaging（Min.Order: 500 pieces）
Customized logo（Min.Order: 500 pieces）
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ISO-7816 USB Floppy IC Chip Smart Card Reader Module With Free SDK MCR3521-M

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Smart Card Reading: Supports ISO-7816 standard smart cards with 125kHz frequency, enabling secure data exchange for access control, payment systems, and identity verification.
  • Long-Range Operation: Reads cards at distances of 0-3 meters, ideal for hands-free authentication in high-traffic areas.
  • USB Integration: Connects via USB for plug-and-play compatibility with PCs, Android 11 devices, and IoT systems, simplifying deployment.

Key features

  • 1. Eco-Friendly Material Technology

    • With a custom circuit board compliant with EPR France/Germany WEEE and Packing certifications, ensure durability and environmental responsibility. The design reduces electronic waste while meeting strict regional recycling standards.

  • 2. Plug-and-Play Interactive Design

    • With a USB interface and free SDK, integrate seamlessly into Android 11 systems for rapid deployment. Its user-friendly setup eliminates complex configurations, ideal for developers and security professionals.

  • 3. Extended Performance Range

    • With a 3-meter reading distance, achieve contactless access control up to 20% farther than standard 125kHz readers*. This ensures reliable performance in high-traffic areas or large entryways.

  • 4. Versatile Scenario Solutions

    • Designed for commercial and residential security, this module adapts to diverse needs—from office access control to smart home integration. Its compact form factor suits both professional and personal use.

  • 5. Global Compliance Certification

    • Certified with CE safety standards and multi-country EPR regulations, guarantee adherence to international safety and environmental norms. Trust in its reliability for global deployments.

Product details

ISO-7816 USB Floppy IC Chip Smart Card Reader Module With Free SDK MCR3521-M

The ISO-7816 USB Floppy IC Chip Smart Card Reader Module (MCR3521-M) is a versatile access control solution designed for secure data transmission and compatibility with 125kHz smart cards. Equipped with a custom circuit board and USB interface, it offers a reading distance of 0–3 meters, making it ideal for applications requiring reliable card detection in dynamic environments. Certified for European markets (EPR France/Germany WEEE/Packing and CE), it integrates seamlessly with Android 11 systems and comes with a free SDK for easy customization.

Technical specifications

FeatureSpecificationBenefit
Card Type125kHz smart cardsCompatibility with widely used proximity cards
Communication InterfaceUSBPlug-and-play integration with PCs/mobile devices
Reading Distance0–3 metersEnsures reliable detection in crowded spaces
CertificationsCE, EPR France/Germany WEEE/PackingMeets EU environmental and safety standards
Operating SystemAndroid 11Supports modern mobile and IoT ecosystems
Security FeaturesCustom circuit board encryptionProtects sensitive data during transmission

Customization guide

Adjustable parameters include reading distance calibration (0–3m range) and encryption protocols to meet specific security requirements. The modular design allows firmware upgrades for enhanced compatibility with legacy systems.

Get inspired

From secure access control in office buildings to payment terminals in retail environments, this module’s long-range detection and Android integration enable scalable solutions. Its rugged black enclosure and USB power make it ideal for outdoor or high-traffic deployments.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Reading Distance0–1.5m0–2.5m (+73%)0–3m (+100%)
Encryption LevelAES-128AES-256AES-256 + Hardware
SDK SupportLimitedFullFull + API extensions
Power Consumption500mA400mA (-20%)350mA (-30%)

Supplier's note

  1. Technical Breakthroughs:

    • Extended Range: The Pro model’s 3m reading distance (triple the Base Model) enables hands-free access control in warehouses or parking systems.
    • Hardware Encryption: The Pro’s AES-256 + Hardware encryption ensures bank-grade security for financial or healthcare applications.
    • EPR Compliance: Full EU WEEE/Packing certifications reduce environmental liability for enterprise deployments.

  2. Version Selection Guidance:

    • Base Model: Ideal for small offices or retail kiosks prioritizing cost efficiency.
    • Advanced Model: Suitable for mid-sized facilities requiring AES-256 security and moderate range (e.g., schools, gyms).
    • Pro Model: Best for high-security environments (e.g., data centers, hospitals) needing maximum range and tamper-proof encryption.

With the Pro Model’s 3m detection range, you can automate entry systems without physical contact. Pair its hardware encryption with Android 11 compatibility to create secure IoT ecosystems. The Advanced Model’s 20% lower power consumption makes it perfect for battery-operated edge devices.

Frequently asked questions

  • Which ISO-7816 USB card reader is best for small business access control systems?

  • How to clean the MCR3521-M reader’s sensor area for optimal performance?

  • Is the MCR3521-M CE and EPR certified for EU commercial use?

  • Can the MCR3521-M’s firmware be customized for specific security protocols?

  • Where can the ISO-7816 reader with 0-3m range be used besides access control?

  • Does the MCR3521-M work with Windows/Linux systems besides Android 11?

  • What security features does the MCR3521-M offer for sensitive data transactions?

  • How easy is it to install the MCR3521-M with its free SDK?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Proximity Card ReadersOffices, warehouses, secure entry pointsFrequency: 125kHz (industry standard)
Reading Distance: 0-1m (▲▲ for advanced models up to 3m)		Cost-effective, easy installation
Supports mass deployment		Short range (▲▲ indicates extended range in premium models)
Vulnerable to cloning
Smart Card ReadersHigh-security facilities, bankingISO 7816 compliance
Reading Distance: 0-3m (▲ vs industry standard 0-1m)
USB interface (Android 11 compatible)		Secure data storage
▲ Extended range for flexibility
EPR certifications (France/Germany WEEE/Packing)		Higher cost
Requires specific card types (e.g., IC chips)
Biometric ReadersData centers, high-security zonesAccuracy: 99.9%
Requires direct contact (fingerprint touch)		No physical card needed
High security against cloning		Expensive
Maintenance required for sensor hygiene
Keyless Entry SystemsVehicle access, car parksFrequency: 125kHz
Range: 0-5m (▲▲ for long-distance models)		No keys required
▲▲ Extended range for convenience		Limited to vehicle use
Potential signal interference
Mobile NFC ReadersEvent venues, retail paymentsNFC-enabled
Reading Distance: 0-10cm (▲ for contactless integration)		Integrates with smartphones
Versatile for payments/entry		Short range
Requires active smartphone participation
Industrial-grade ReadersFactories, outdoor environmentsIP67 rating (dust/waterproof)
Operating Temp: -20°C to 60°C		Withstands harsh conditions
Rugged design for durability		Bulky size
Higher upfront cost

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