double frequency
favoriteMy favorite sitemapSitemap printPrint


EM4100/EM4102 (previously named H4100/4102) is a CMOS integrated circuit for use in electronic Read Only RF Transponders. The EM4100/4102 card is one of the most widely used LF (125KHz) proximity card around the world. It's a great solution for access control, time attendance, etc.


Chip Parameters

IC Type EM4100/4102
Frequency 125KHz
Mode R/O
Protocol /
Memory 64 bit
Operating Distance

Up to 50mm

(depending on antenna geometry)

Anticollision no

Access control systems, Time attendance systems, Loyalty program,

Mass transportation ticketing, Staff identification

Card Parameters

Dimention 85.6×54×0.8 mm
Material PVC, PET, PC, PETG
Surface Matt / Glossy
Temperature -25~50 ‘C
Weight Per Card 6 grams
Package 200 or 250 pcs/box, or on request


  • Print: offset, silkscreen, thermal printing
  • Serial number printing: thermal or inkjet format
  • Signature panel, Scratch off, Hologram, Laser film
  • Magnetic stripe: LoCo 300 Oe, HiCo 2750 Oe or 4000 Oe
  • Embossing, Hot-stamping, Hole punching
  • Encoding, UV printing, Color photo printing

Ordering Information

Delivery Term

  • By express, by air or by sea
  • <10k pcs: within 15 working days
  • ≥10k pcs: to be negotiated

Payment term

  • TT in advance or L/C
  • Others on request

Why buy from us ?

  • Experience, expertise & consultancy
  • A full range of contactless card supplies
  • Superb quality guarantee
  • Competitive price guarantee
  • Fast & diverse delivery
  • Personalized service
  • Flexible payment term
  • Keep you informed every step of the way
Sample Application

Contact Us

Shanghai RealSmart Technologies Co., Ltd.

R201, Bldg E, No. 50, Lane 2080 Lianhua Rd, Minhang Dist, Shanghai 201103, China

Tel: +86 21 6432 6941

Fax: +86 21 6432 6942



Tel: +86 21 6432 6941