RFID keyfobs EM 4200 125 KHZ

Item number: KF-EM-4200-E-0
Memory size: 128 bytes

Special feature: several resonance capacitors

Addition: On-chip rectifier and voltage limiter

  • Frequency: 125 KHz
  • Memory: 128 bytes
  • Data rate options: Manchester, Biphase, PSK and FSK
  • Resonant capacitors: 75 pF, 210 pF or 250 pF mask options
  • Suitable for: Companies, access control, time recording, events, sport and leisure facilities and payment systems

Category: RFID and chip cards


0,99 €

including 19% VAT. , plus shipping

(net: 0,83 €)
From Price per unit net
1 0,99 € 0,83 €
100 0,95 € 0,80 €
1000 0,75 € 0,63 €
Available now!


RFID key fobs, also known as transponders, are compact key fobs made of robust and waterproof PVC, which are fitted internally with a radio frequency antenna (RFID). This is known in English as Radio Frequency Identification.

In order to read out the data stored on the fob, you do not need direct physical contact with the reader. Readout can be performed at a short distance.

RFID technology is most frequently used for access and entry control, for example, at exhibitions, concerts, government buildings, ski slopes or at airports and in the form of key cards and key tags in hotels, nightclubs or leisure resorts.

PVC fobs double sided, colour, approx. 5 mm thick.

The fobs can be printed by means of thermosublimation or retransfer printing. As such, you can produce your own personalised access and control key fobs on site in a cost-effective manner.

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