RXK01 key fob. Colors and personalization are specified for your order.
RXK01 key fob with EM4205
RXK01 key fob configured with EM4205. A programmable low frequency IC with 16 words of 32 bits, configurable data encoding and password controlled operations.
Printing, encoding, quantity and delivery are confirmed in the approved order specification.
The EM4205 configuration.
An ABS key fob measuring 53 × 37.5 × 9.8 mm with a weight of 9.7 g. Available chip options span low frequency, high frequency and UHF technologies, with color, silkscreen printing and laser engraving options for credential programs.
A programmable low frequency IC with 16 words of 32 bits, configurable data encoding and password controlled operations.
Physical specifications
| Specification | Details |
|---|---|
| Material | ABS |
| Temperature | -10˚ to 50˚ Celsius |
| Dimensions | 53 x 37.5 x 9.8 mm |
| Weight | 9.7 g |
| Available Colors | Red, Blue, Pink, Grey, Black, Yellow |
| Printing Options | Silkscreen, Laser Engraving |
| Number Printing Options | Laser, Inkjet |
| Packing Details | 1000 pieces per carton; Carton size: 50×25x22 cm / Carton weight: 11kg 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.
EM4205 IC specifications
| Specification | Details |
|---|---|
| Semiconductor IC | EM4205 |
| Interface / protocol | LF; EM4469/EM4569 compatible command protocol |
| Operating frequency | 100–150 kHz; nominal 125 kHz application |
| Total EEPROM | 512 bits; 16 words of 32 bits |
| User data area | Words 5–13: 288 bits in the default message; additional uses defined by the memory map |
| Factory identifier | 32 bits |
| Access protection | 32 bit password for protected read and write operations |
| Data encoding | Manchester or biphase; configuration dependent |
| Memory protection | Word protection can prevent further writes |
Memory and protocol values describe the IC. Actual read performance depends on the finished antenna, enclosure, reader and operating environment.
512 bits is the total EEPROM, including UID, password, configuration and protection words. It is not 512 bits of unrestricted application storage.
Select data rate and modulation to match the installed reader. IC limits do not establish the temperature rating of the finished product.
Integration and qualification
Validate the modulation, bit rate and identifier format with the installed low frequency reader. NFC phones do not read 125 kHz credentials. For programmed formats, agree a sample identifier and confirm how the host system interprets it.
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 RXK01 key fob with EM4205 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.
