Blue ShillehTek 13.56MHz RFID key fob tag with dual metal key rings

13.56MHz RFID Key Fob Tag with S50 IC ISO14443A Access Control Token

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13.56MHz RFID key fob with S50 IC for encrypted NFC access, compact and rugged for daily carry; ideal for gym membership access and quick, secure entry.

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Overview

Product Overview

The 13.56MHz RFID key fob token is a compact, passive NFC credential built around the widely used S50 IC, providing 1K byte of memory and organized into 16 encrypted sectors so you can isolate access data or small applications on a single tag. It adheres to the ISO14443A standard for broad compatibility with high‑frequency readers and NFC devices, making it suitable for gym access, apartment elevators, cashless systems and other access control workflows. The ABS housing is ultrasonic‑welded and sealed to be waterproof and shock‑resistant, protecting the chip from daily carry and outdoor exposure. With no batteries or active maintenance required, this fob is a practical, durable solution for straightforward credential management and secure authentication tasks.

Questions & answers

Frequently asked questions

This fob follows the ISO14443A standard at 13.56MHz and uses an S50 IC, commonly associated with MIFARE-compatible systems. It is intended for high-frequency RFID/NFC readers that support this tag type, including many access control readers and compatible Arduino RFID projects.
The tag is a passive credential, so it does not need batteries, charging, or wiring. It is ready to enroll or program with a compatible 13.56MHz ISO14443A reader/writer, depending on your access control system or project software.
This key fob operates at 13.56MHz using the ISO14443A contactless interface. The S50 IC provides 1K byte of memory organized into 16 encrypted sectors, allowing separate storage areas for access data or small tag-based applications.
It is suitable for common credential tasks such as gym access, apartment elevator entry, cashless systems, and general access control workflows. The sealed ABS housing helps protect the tag during daily carry and outdoor exposure.
If the fob is not detected, verify that your reader supports 13.56MHz ISO14443A S50-type tags and that your software can authenticate the needed sectors. It will not work with low-frequency 125kHz RFID systems.

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What's included

Features & Specs

S50 Smart Chip Built with the S50 IC offering 1K byte memory for secure credential storage.

ISO14443A Compatible Works seamlessly with standard HF readers and NFC-enabled smartphones.

Encrypted Sectors Memory is divided into 16 encrypted sectors to separate applications and data.

Passive NFC Operation Requires no battery and activates only when in range of a reader.

Durable Sealed Body Ultrasonic-welded ABS housing is waterproof and shock-resistant for daily use.

Keyring Ready Compact fob design fits on keys for convenient everyday access control.

Multi-Application Use Supports gym, building entry, payment, and other contactless authentication tasks.

Reference

Documents

Full Product Manual ShillehTek 13.56MHz RFID Key Fob Tag IC S50 Token ISO14443A Access Control | ShillehTek Product Manual In-depth setup guide with wiring, code examples, and troubleshooting.

Datasheet

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