125KHz RFID Keychain (read)

Buy Now on Stufin

Component Description

125KHz RFID Keychain (Read)

Overview

The 125KHz RFID Keychain (Read) is a compact, passive Radio-Frequency Identification (RFID) transponder designed for identification and access control applications. This keychain tag is designed to operate at a frequency of 125KHz and is compatible with various RFID readers.

Functional Description

The 125KHz RFID Keychain (Read) is a passive RFID tag that stores a unique identifier, which can be read by an RFID reader when brought within proximity. The tag does not have an internal power source and relies on the electromagnetic field generated by the RFID reader to power its operation. When an RFID reader sends out a radio-frequency signal, the tag absorbs energy from the signal and uses it to transmit the stored identifier back to the reader.

Key Features

Operating Frequency: 125KHz
Communication Protocol: Passive RFID
Memory Capacity: Typically 96 bits (12 bytes) or 128 bits (16 bytes)
Reading Distance: Up to 10 cm (4 inches) depending on the RFID reader's power and antenna design
Operating Temperature: -20C to +80C (-4F to +176F)
Dimensions: 45 mm x 25 mm x 5 mm (1.77 in x 0.98 in x 0.2 in)
Material: Durable ABS plastic or PVC
Keychain Design: Convenient and compact design with a keyring attachment
Identification: Unique identifier stored in the tag's memory

Technical Specifications

Tag Type: Passive RFID tag
Resonant Frequency: 125KHz
Antenna Type: Coil antenna
Memory Organization: Typically divided into blocks or pages for storing data
Data Transfer Rate: Typically up to 10 kbps

Applications

Access Control: Use the 125KHz RFID Keychain (Read) for secure authentication and access control in various applications, such as building access, door locks, or gates.
Identification: Utilize the tag for identifying people, objects, or assets in inventory management, logistics, or supply chain tracking.
Payment Systems: Implement the tag in contactless payment systems, such as public transportation or vending machines.

Important Notes

Compatibility: Ensure the 125KHz RFID Keychain (Read) is compatible with the chosen RFID reader and application.
Security: Implement proper security measures to prevent unauthorized access or tampering with the tag's stored data.
Environmental Factors: Avoid exposing the tag to extreme temperatures, humidity, or physical stress, as it may affect its performance or lifespan.

By following the guidelines and considerations outlined in this documentation, the 125KHz RFID Keychain (Read) can be effectively integrated into various applications, providing a reliable and convenient means of identification and access control.

Pin Configuration

125KHz RFID Keychain (Read) Component Documentation
The 125KHz RFID Keychain (Read) is a compact, low-frequency RFID tag that can be used for various identification and authentication applications. This component has 2 pins, which are explained below:
Pin Description:
1. VCC:
Function: Power Supply
Description: This pin is used to supply power to the RFID keychain. Typically, a voltage range of 1.8V to 3.3V is recommended.
Connection: Connect to a stable power source (e.g., a microcontroller's VCC pin or a battery).
2. GND:
Function: Ground
Description: This pin is used to provide a ground reference for the RFID keychain.
Connection: Connect to a ground point on the circuit board or a ground pin on a microcontroller.
Connection Structure:
To connect the 125KHz RFID Keychain (Read) to a microcontroller or a reader module, follow this structure:
Connect the VCC pin of the RFID keychain to the VCC pin of the microcontroller or reader module.
Connect the GND pin of the RFID keychain to the GND pin of the microcontroller or reader module.
Important Notes:
Make sure to handle the RFID keychain with care, as it can be easily damaged by static electricity or physical stress.
When connecting the RFID keychain, ensure that the power supply voltage is within the recommended range to avoid damage or malfunction.
The RFID keychain should be placed in close proximity to the reader module or antenna to ensure reliable communication.
By following these instructions, you can establish a secure and reliable connection between the 125KHz RFID Keychain (Read) and your microcontroller or reader module.

Code Examples

125KHz RFID Keychain (Read) Component Documentation

Overview

The 125KHz RFID Keychain (Read) is a compact, low-frequency RFID tag designed for identification and authentication applications. This component is compatible with ISO/IEC 11784/11785 standards and can be read by 125KHz RFID readers. This documentation provides an overview of the component's features, specifications, and code examples to demonstrate its usage in various contexts.

Features

Operating frequency: 125KHz
 Read-only mode
 ISO/IEC 11784/11785 compliant
 Waterproof and dustproof design
 Compact keychain form factor

Specifications

Dimensions: 35 x 25 x 5mm
 Operating temperature: -20C to 80C
 Storage temperature: -40C to 120C
 RFID chip: T5577 or compatible
 Reading distance: Up to 10cm (depending on reader strength)

Code Examples

### Example 1: Arduino Uno with RFID-RC522 Reader

In this example, we will use the RFID-RC522 reader module with an Arduino Uno board to read the 125KHz RFID Keychain.

Hardware Requirements

Arduino Uno board
 RFID-RC522 reader module
 125KHz RFID Keychain (Read)

Software Requirements

Arduino IDE (version 1.8.x or later)
 MFRC522 library (version 1.4.x or later)

Code
```cpp
#include <SPI.h>
#include <MFRC522.h>

#define RST_PIN  9  // Reset pin for RFID-RC522
#define SS_PIN  10 // Slave select pin for RFID-RC522

MFRC522 mfrc522(SS_PIN, RST_PIN);

void setup() {
  Serial.begin(9600);
  SPI.begin();
  mfrc522.PCD_Init();
}

void loop() {
  if ( ! mfrc522.PICC_IsNewCardPresent()) {
    return;
  }

if ( ! mfrc522.PICC_ReadCardSerial()) {
    return;
  }

Serial.print("Card UID: ");
  Serial.println(mfrc522.uid.uidByte, HEX);

// Perform actions based on the read UID
  // ...

mfrc522.PICC_HaltA();
}
```
### Example 2: Raspberry Pi with RPi.GPIO and python-mfrc522

In this example, we will use a Raspberry Pi board with the RPi.GPIO library and python-mfrc522 module to read the 125KHz RFID Keychain.

Hardware Requirements

Raspberry Pi board
 RFID-RC522 reader module
 125KHz RFID Keychain (Read)

Software Requirements

Raspbian OS (version 10 or later)
 RPi.GPIO library (version 0.7.x or later)
 python-mfrc522 module (version 1.3.x or later)

Code
```python
import RPi.GPIO as GPIO
from mfrc522 import SimpleMFRC522

reader = SimpleMFRC522()

while True:
    try:
        id, text = reader.read()
        print("Card UID: ", id)
        print("Card data: ", text)

# Perform actions based on the read UID and data
        # ...

except KeyboardInterrupt:
        GPIO.cleanup()
        break
```
These examples demonstrate the basic usage of the 125KHz RFID Keychain (Read) component with popular microcontroller boards. You can modify the code to fit your specific application requirements and integrate the RFID keychain with other components and systems.