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10 Pcs RFID T5577 Writeable RFID Key Fob,125KHz Rewritable Keychains Support EM4100 Protocol for Access Control System

Based on 9 reviews
Condition: New
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$9.99
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Availability: In Stock.
Fulfilled by Amazon

Arrives Friday, Oct 30
Order within 22 hours and 9 minutes

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At a glance

Condition
New
Color
Blue
Size
Drop shaped - 10 pcs
Model
ZY-T5577-YSK-10B
Dimensions
1.57 x 1.18 x 2.36 in
Weight
1.41 oz

Features 5

  • Quantity: 10 pieces Blue T5577 Keyfob,size:40mm x 30mm x 4mm. Our T5577 keyfob is made from a combination of high-quality ABS and metal materials that are not only strong and durable, but also sophisticated in appearance. The ABS shell is well protected against daily wear and tear, is waterproof and heat-resistant, and its small, lightweight design makes it easy to hang from a keychain for on-the-go portability without adding unnecessary bulk.
  • Chip:Operating at a frequency of 125kHz, this key fob is equipped with the original T5577 chip, renowned as one of the best rewritable chips in the market. The reading distance ranges from 2.5-10cm, ensuring reliable and quick communication with compatible RFID readers.
  • Application: Our T5577 key fob supports both read and write modes,making it highly adaptable.It can be seamlessly used with 125kHz RFID card copiers or duplicators,allowing you to easily transfer or rewrite data as needed.Whether you're using it for access control systems or other applications,its flexibility in data management is a huge advantage.
  • Note: The 10pcs T5577 keyfobs included in the package are the default empty command keyfobs, without pre-programmed card numbers, you cannot directly add them to RFID locks or use a card reader to read them. To test read/write, first copy data from an original card by a 125kHz replicator, and then write it into the cards/keychains.

Description

Frequency: 125kHz Material: ABS shell Size: 1.58*1.18*0.16 inches (40*30*4 mm) Chip: Original ATMEL T5577 Memory capacity: 330 bits (264 available free bits) Reading distance: 2.5-10 centimeters Data retention time: 10 years About us Welcome to ZHAOYU. As a professional manufacturer, we have been continuously producing high-quality NFC tag products for over ten years. We hope our NFC tag will make your life more fun and convenient.

Specs 4

Product Dimensions 1.57 x 1.18 x 2.36 inches
Item Weight 1.41 ounces
Manufacturer ZHAOYU
Item model number ZY-T5577-YSK-10B

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Oct 30

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


Perfect
Color: Black Size: Drop shaped - 10 pcs
Super easy to program.
Reviewed in the United States on April 19, 2026 by JustMeEP

No aceptan la programacion
Color: Black+Blue Size: Drop shaped - 10pcs Black + 10pcs Blue
No cogen la Programacion .
Reviewed in the United States on May 17, 2026 by Juan Carlos rosario aponte

50% Failure Rate
Color: Blue Size: Drop shaped - 10 pcs
Do not buy. Only 50% were able to be successfully written to.
Reviewed in the United States on February 17, 2026 by David Lewis
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