Green RFID Keyfob 125kHz TK4100 Read-Only

Green RFID Keyfob 125kHz TK4100 Read-Only

Sensors
DET6262
€1.50
In Stock
Immediate Dispatch

The green RFID Keyfob (Tag) operates strictly at the 125kHz frequency and features the reliable TK4100 chip (EM4100 compatible). It is a Read-Only device, meaning it comes with a unique, factory-programmed ID number that cannot be altered. Highly durable and completely waterproof, it interfaces seamlessly with 125kHz RFID readers (such as the RDM6300 module). CRITICAL NOTE: This tag operates exclusively at 125kHz and is NOT compatible with 13.56MHz readers, such as rc522 tags or smartphone NFC scanners.

 

Reliable 125kHz Identification & Access Control

Upgrade the security and convenience of your IoT applications with this classic rfid keyfob. Built to withstand tough environments, it is the perfect credential for any access control system in offices, residential buildings, or custom automation setups. Recognized as one of the most practical arduino components, it delivers instant and reliable identification, serving as a robust alternative to standard rfid cards cyprus.

Key Features

  • Read-Only Operation: The TK4100 chip holds a pre-programmed, unalterable UID, ensuring high stability and eliminating the risk of accidental data erasure.
  • 125kHz Operating Frequency: Utilizes the standard low-frequency (LF) industrial band, widely supported by legacy and modern Access Control / Time Attendance systems.
  • Durability & Design: Encased in high-quality, waterproof ABS plastic with a bright green color for easy visual identification. Capable of operating in extreme temperatures from -40°C to 85°C.

Frequently Asked Questions

Q: Is this compatible with the Arduino RC522 reader module?
A: No. The RC522 module exclusively supports rc522 tags operating at 13.56MHz. This keyfob functions at 125kHz, so you must use a corresponding LF reader (like the RDM6300 module) for your microcontroller projects.

Q: Can I read it with my mobile phone's NFC for a Smart Home setup?
A: No. Smartphones can only scan nfc tags cyprus using the 13.56MHz frequency. Mobile devices do not have the antenna hardware required to communicate with 125kHz proximity tags.

Technical Specifications

Chip Type (IC) TK4100 (EM4100 Compatible)
Operating Frequency 125kHz
Function Read-Only
Operating Temperature -40°C to +85°C
Form Factor Keyfob (Tag)
Material & Protection ABS Plastic / Waterproof
Price is for one (1) piece.

Compatibility Warning: Please ensure that your RFID Reader supports the exact same frequency (125kHz) as this tag, otherwise reading will not be possible.
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