
RXK04 key fob. Colors and personalization are specified for your order.
RXK04 key fob with NTAG215
RXK04 key fob configured with NTAG215. An NFC Type 2 IC with 504 bytes of user memory for encoded URLs, product information and identification.
Printing, encoding, quantity and delivery are confirmed in the approved order specification.
The NTAG215 configuration.
An ABS key fob measuring 40 × 33 × 4 mm and weighing 6 g. Choose the IC, enclosure color and personalization for access, membership or identification systems. Silkscreen printing, laser engraving and printed numbering options support a consistent credential program.
An NFC Type 2 IC with 504 bytes of user memory for encoded URLs, product information and identification.
Physical specifications
| Specification | Details |
|---|---|
| Material | ABS |
| Temperature | -10˚ to 50˚ Celsius |
| Dimensions | 40x33x4 mm |
| Weight | 6.00 g |
| Available Colors | Red, Blue, Green, Grey, Black, Yellow |
| Printing Options | Silkscreen, Laser Engraving |
| Number Printing Options | Laser, Inkjet |
| Packing Details | 2000 pieces per carton; Carton size: 50×24×15 cm / Carton weight: 14kg per carton. |
Manufacturing specifications are confirmed for the selected size, materials and finishing options in your approved order. IC temperature or security ratings do not establish finished product ratings.
NTAG215 IC specifications
| Specification | Details |
|---|---|
| Semiconductor IC | NTAG215 |
| Interface / protocol | ISO/IEC 14443 Type A · NFC Forum Type 2 |
| User memory | 504 bytes |
| Total EEPROM | 540 bytes |
| Data rate | 106 kbit/s |
| Identifier | 7 byte UID |
| Memory access | 32 bit password protection and configurable locking |
| Originality | ECC based originality signature |
| Write endurance | 100,000 cycles, subject to datasheet conditions |
| Data retention | 10 years, subject to datasheet conditions |
Memory and protocol values describe the IC. Actual read performance depends on the finished antenna, enclosure, reader and operating environment.
Allow space for NDEF overhead when calculating the encoded message size. User memory is not the same as maximum URL length.
Password protection and an originality signature are different capabilities. NTAG21x does not provide the AES authenticated secure messaging of DESFire.
For a phone tap experience, encode and verify an NDEF message and test representative iOS and Android devices on the finished product.
Integration and qualification
Use an NDEF message for a standard phone tap experience. Calculate the complete encoded byte count, choose a URL under your control and verify the readback before locking the tag. Test the finished product against representative phone antennas and operating systems.
Check key ring attachment, handling and scan orientation. Assess the fob alongside keys and other metal objects under normal use.
Approve an encoded sample in the finished application before volume production. Define acceptance criteria for identification, memory access, printed data and repeated operation.
Define your production requirement.
Reference RXK04 key fob with NTAG215 in your enquiry, together with the following details.
| Specification | Details |
|---|---|
| System | Reader manufacturer and model, application software and existing credential specification |
| Configuration | IC part number and memory variant, product size, color and required finish |
| Personalization | Print artwork, numbering format, encoding layout and verification requirements |
| Supply | Initial quantity, repeat volume, sample quantity, destination and required delivery date |
| Acceptance | Sample approval criteria and any required material, compliance or traceability documents |
Minimum order quantity, current availability, lead time and pricing are confirmed for the complete configuration. Production availability is confirmed with your quotation.
Build your quotation briefTechnical references
Semiconductor documentation defines IC capabilities. Our approved product specification defines the finished Roxtron product.



