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Twenty blue ABS key fobs each 1.4 by 1.1 by .2 inch with engraved 10-digit ID

visiPower

visiPower 125kHz RFID Key Fob Blue 20pcs

SKU CH-0W46-JGFY7

Pack of 20 blue 125kHz RFID key fobs with unique pre-programmed IDs for access control systems

  • ProtocolBluetooth
  • TypeKey Fob

Type 20pcs

  • Ready-to-use access with 20 pre-programmed unique IDs
  • Works with standard 125kHz systems using EM4100/4102 compatibility
  • Durable ABS plastic casing withstands -25 °C to +75 °C operation
  • Compact 1.4*1.1*0.2 inch size fits easily on any keyring
  • 10-year data retention and 100,000 wipe cycles ensure long-term reliability

125 kHz RFID Key Fobs — 20 pack

These blue ABS key fobs operate at 125 kHz and come pre-programmed with a unique 10-digit ID engraved on each tag. They are intended for proximity access control and ID management systems that use unencrypted 125 kHz credentials. The pack supplies twenty fobs for issuing to staff, residents or visitors. Each fob measures roughly 1.4 by 1.1 by 0.2 inch.

Frequency and encryption constraints

The fobs only work with systems that read unencrypted 125 kHz tags such as EM4100 or EM4102. They will not function with 13.56 MHz readers or with encrypted formats including HID, Indala, Cobra, APCiK, Paradox, Radio, Honeywell, Kaba or Isonas. You cannot re-program the ID; the tags are readable and rewritable but the unique number is fixed at manufacture. Buyers who need a different frequency or encrypted credentials cannot use these fobs.

ABS casing and everyday handling

The blue ABS plastic shell protects the chip across a working temperature range of -25 °C to +75 °C and a storage range of -15 °C to +45 °C. Data retention is rated for 10 years and the wiping life reaches 100,000 cycles. The compact size fits on a key ring or lanyard, and the engraved ID allows quick visual verification without a reader. Anti-interference performance helps maintain reads at distances up to 10 cm.

Highlights

  • Ready-to-use access with 20 pre-programmed unique IDs
  • Works with standard 125kHz systems using EM4100/4102 compatibility
  • Durable ABS plastic casing withstands -25 °C to +75 °C operation
  • Compact 1.4*1.1*0.2 inch size fits easily on any keyring
  • 10-year data retention and 100,000 wipe cycles ensure long-term reliability

Specifications

ProtocolBluetooth
TypeKey Fob

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Questions about this item

Should I choose the 125 kHz blue fobs or the 13.56 MHz option for my access system?

Pick the 125 kHz version only if your lock or controller reads unencrypted 125 kHz tags; the 13.56 MHz option works with different readers and will not communicate with a 125 kHz system.

What does the 0-10 cm working distance mean when I hold the fob at a real door?

You must bring the fob within about 10 cm of the reader; performance drops quickly beyond that range, so tap it close to the panel for a reliable read.

The fobs use a 125 kHz interface — what does that cap in practice?

It limits use to unencrypted 125 kHz readers such as EM4100/4102 systems; encrypted formats like HID, Indala or 13.56 MHz readers will not accept these tags.

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