Key Features:

✔ 125kHz Frequency – Works with EM4100, TK4100, and FDX-B tags (animal chips). ✔ Read Range: 5–10cm – Depends on antenna size and tag type. ✔ Multiple Output Formats:

• UART (TTL) – Directly connects to Arduino/RPi (3.3V/5V).

• Wiegand 26/34 – Standard for access control systems.

• RS232 (optional) – For industrial terminals. ✔ Compact Antenna Design – Integrated coil for easy installation. ✔ LED & Buzzer Feedback – Visual/audio confirmation of tag reads.

Applications:

• Door Access Systems – Keyless entry with RFID cards/key fobs.

• Attendance Tracking – Log employee/student check-ins.

• Animal Identification – Scan pet microchips (FDX-B).

• DIY Security – Activate alarms or disable engines.

Wiring (UART Example):

• VCC → 5V (or 3.3V for some modules).

• GND → Ground.

• TXD → Arduino RX pin (e.g., D2 for SoftwareSerial).

• RXD → Arduino TX pin (optional for configuration).

Technical Specifications:

• Operating Voltage: 5V DC (or 3.3V for low-power versions).

• Current Draw: ~50mA (during read).

• Supported Tags: EM4100, TK4100, FDX-B (animal chips).

• Output Data: 5-byte or 10-byte HEX ID (configurable).

• Dimensions: ~60mm × 40mm (antenna included).