EM4200 label

LF RFID Tag | LF RFID Label | 125KHz, 134.2KHz

INTELLHYDRO LF RFID tag is 125KHz or 134.2KHz (Read Only or Read/Write) RF transponders intended for low cost solutions like animal tagging applications, access control, waste management, etc.

LF RFID tag (low frequency)is powered by picking up energy from a continuous 125 kHz magnetic field via an external coil, which together with the integrated capacitor form a resonant circuit. The IC reads out data from its internal EEPROM and sends it out by switching on and off a resistive load in parallel to the coil using a large modulation index. Commands and EEPROM data updates can be executed by 100% AM modulation of the 125 kHz magnetic field.

INTELLHYDRO supply LF RFID tag with Chips EM4200, EM4305 from Manufacturer EM Microelectronic. OEM service is available too.

Chip introduction:

EM4200, Read Only RF transponders, has 128-bit unique code stored in laser programmed ROM. Several options are available to use 64, 96 or 128 bits of ROM.

The EM4205/4305 supports bi-phase and Manchester data encodings. The EM4205/4305 operating modes are stored in the EEPROM configuration word. All EEPROM words can be write-protected by setting protection bits. The IC contains a factory programmed 32-bit unique identifier number (UID)


  • Animal Identification according to ISO11785 (FDX-B)
  • Pigeon races standard
  • Waste management standard (BDE)
  • Access Control
  • Logistics automation
  • Anti-counterfeiting
  • Industrial transponder


Description RFID LF tags provide simplicity for Logistics, Identification, Assets Tracking, Inventory Management, even in e-Payment, E-ticket etc., with a low cost paper label tag.
Chip TK4100/EM4200/EM4305/Atmel ATA5577
Protocol ISO18000-2/ISO11784/11785
Size Diameter 25mm,25*25mm,30*30mm,40*40mm,50*50mm or customized
Memory 64bit,64bit,512bit,363bit
Frequency 125KHz/134.2KHz
Material Coated paper, PVC, PET,CPC or customized
Write Endurance ≥100000 cycles
Read Range 1-10cm(depends on the reader and antenna)
Application Identification, Stock management, Authentication, Asset Control, etc.

Optional craft

Color Black, yellow, red, green, blue, pink or customized.
Craft Single color or Multi-color Printing, Barcode or QR Code printing, Data encoding

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