125kHz RFID Reader/Writer Module – Low-Frequency Proximity Card System
175.00 EGP
This 125kHz RFID module is a low-frequency (LF) contactless card reader/writer compatible with EM4100, TK4100, and other 125kHz RFID tags. Ideal for access control, attendance systems, and DIY security projects, it offers reliable short-range identification with simple UART or Wiegand output.
Description
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:
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UART (TTL) – Directly connects to Arduino/RPi (3.3V/5V).
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Wiegand 26/34 – Standard for access control systems.
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RS232 (optional) – For industrial terminals.
✔ Compact Antenna Design – Integrated coil for easy installation.
✔ LED & Buzzer Feedback – Visual/audio confirmation of tag reads.
Applications:
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Door Access Systems – Keyless entry with RFID cards/key fobs.
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Attendance Tracking – Log employee/student check-ins.
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Animal Identification – Scan pet microchips (FDX-B).
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DIY Security – Activate alarms or disable engines.
Wiring (UART Example):
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VCC → 5V (or 3.3V for some modules).
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GND → Ground.
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TXD → Arduino RX pin (e.g., D2 for SoftwareSerial).
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RXD → Arduino TX pin (optional for configuration).
Technical Specifications:
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Operating Voltage: 5V DC (or 3.3V for low-power versions).
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Current Draw: ~50mA (during read).
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Supported Tags: EM4100, TK4100, FDX-B (animal chips).
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Output Data: 5-byte or 10-byte HEX ID (configurable).
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Dimensions: ~60mm × 40mm (antenna included).






















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