RFID Key Fob Tag 125kHz (EM4100 Compatible)
Prices updated: 13 Oct 2026
Compare prices
| Store | product | Price | View in store |
|---|---|---|---|
 Most ElectronicsCheapest | RFID Tag (125KHz) | 9.9 EGP11.34 | View in store |
 Ekostra | RFID Tag 125kHz | 10 EGP | View in store |
Price history
Lowest daily price, last 90 days
Not enough price history yet.
Lowest price recorded: 9.9 EGP
About this product
A passive 125 kHz RFID key fob tag with a read-only ID, used in access control, attendance and alarm systems. It has no battery and is powered by the reader's field. The water-drop shaped ABS housing is designed to attach to a keyring.
Specifications
- Frequency
- 125 kHz
- Protocol
- EM4100 compatible (typical)
- Memory
- Read-only
- Material
- ABS
- Dimensions
- 43.7 × 30.5 × 5.3 mm
- Read range
- 2–10 cm (depends on reader)
- Operating temperature
- -40 °C to 85 °C
Frequently asked questions
What is the price of RFID Key Fob Tag 125kHz (EM4100 Compatible) in Egypt?
RFID Key Fob Tag 125kHz (EM4100 Compatible) currently costs between 9.9 and 10 EGP across 2 offers in Egypt.
Where can I buy RFID Key Fob Tag 125kHz (EM4100 Compatible) in Egypt?
RFID Key Fob Tag 125kHz (EM4100 Compatible) is available from Most Electronics and Ekostra. Compare the offers above to find the best price.
Can I write or change the ID on this tag?
No. The tag is read-only and its ID is fixed at manufacture. It can only be read by a compatible reader.
How do I connect it to an Arduino?
The tag has no wiring. Connect a 125 kHz RFID reader module that supports EM4100 decoding to the Arduino through its serial or other supported interface, then hold the tag within its read range.
