The Wavelynx EV3 4K ISO Card (P/N 50L4) is a 13.56 MHz MIFARE DESFire EV3 contactless smart card used for physical access control, sold here as a bulk pack of 100 factory-programmed credentials.
Built on NXP's MIFARE DESFire EV3 chip, the 50L4 is a high-frequency (13.56 MHz) smart card designed for organizations standardizing on modern, encrypted access credentials. Each card in this pack of 100 is factory-programmed to your specification encryption keys, bit format, facility code, and ID range so credentials arrive ready to enroll in your access control system with no on-site encoding required. With 4K of onboard memory, the 50L4 comfortably supports a single access control application alongside room for future use cases such as cashless vending or secure printing.
Key Features
- 13.56 MHz MIFARE DESFire EV3 chip with EAL 5+ certified security
- 4K memory for access control plus room for secondary applications
- Factory-programmed to your encryption keys, bit format, facility code, and ID range
- LEAF Si enabled standard for interoperability across the LEAF Community ecosystem
- Durable CR80 composite PVC/PET construction, standard credit-card size
- Sold in bulk packs of 100 for consistent, large-scale credential rollouts
Technical Specifications
| Manufacturer |
Wavelynx |
| Part Number |
50L4 |
| Chip Technology |
MIFARE DESFire EV3 |
| Frequency |
13.56 MHz (HF) |
| Memory |
4K |
| Card Format |
CR80, 3.37" × 2.13" × 0.03" (85.6 × 54.0 × 0.8 mm) |
| Material |
Composite PVC / PET, printable surface |
| Color |
White |
| Security |
EAL 5+ certified chip, AES-128 encryption |
| LEAF Compatibility |
LEAF Si enabled standard; LEAF Cc available by request |
| Warranty |
Lifetime |
| Pack Quantity |
100 cards per pack |
Compatibility
Compatible with Wavelynx Ethos multi-technology readers and other reader hardware in the LEAF Community ecosystem. LEAF Si is enabled standard on every credential, with LEAF Cc available by request for custom deployments. Each card ships factory-programmed and ready to enroll, with support for standard or custom encryption keys, standard and unique bit formats, and your choice of facility code and ID range.
Ideal For
- Corporate offices and multi-tenant office buildings
- Universities and K-12 campuses standardizing on encrypted credentials
- Healthcare facilities upgrading from legacy prox-only access
- Any organization issuing or replacing credentials at scale
Frequently Asked Questions
What is the difference between the 50L4 and the 50L8?
Both are single-frequency 13.56 MHz MIFARE DESFire EV3 cards with the same physical format. The 50L4 carries 4K of memory, while the 50L8 carries 8K — useful if you plan to run multiple applications on one credential.
Does this card work with proximity (125 kHz) readers?
No. The 50L4 is a high-frequency-only (13.56 MHz) card. If you need a single card that works with both 125 kHz proximity and 13.56 MHz smart readers, see the Wavelynx Dual Tech EV3 4K + Prox ISO Card (50M4).
Can these cards be printed on and customized?
Yes, the composite PVC/PET surface is compatible with standard direct-to-card printers for photo IDs, logos, and other visual customization.
Do I need to program these cards myself?
No. Cards are factory-programmed to your specified encryption keys, bit format, facility code, and ID range before they ship, so they're ready to enroll in your access control system out of the box.
Order the Wavelynx EV3 4K ISO Card in bulk packs of 100 to keep your credential rollout consistent, secure, and ready to enroll from day one.
