{"product_id":"125khz-rfid-card-reader-module-uart-interface","title":"125KHz RFID Card Reader Module UART Interface | Fast ID Read","description":"\n\u003ch2\u003e125KHz RFID ID Card Reader Module with UART Interface\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e125KHz RFID ID Card Reader Module\u003c\/strong\u003e is a compact, reliable embedded reader designed for seamless integration into access control systems, automation projects, and DIY electronics builds. With a fast card-read response and standard UART communication, this module is an ideal solution for makers, engineers, and hobbyists looking to add RFID capability to their setup.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Speed Card Reading:\u003c\/strong\u003e Reads 125KHz RFID cards in under 100ms, enabling swift and smooth identification.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUART Interface:\u003c\/strong\u003e Standard serial communication makes integration straightforward with microcontrollers like Arduino, Raspberry Pi, and other development boards.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5V Operating Voltage:\u003c\/strong\u003e Runs efficiently at 5V, ensuring broad compatibility with common power supplies and development platforms.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact PCB Design:\u003c\/strong\u003e Lightweight and space-saving, easy to embed into custom enclosures or project builds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Works with standard 125KHz EM4100 or compatible ID cards and key fobs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStable Performance:\u003c\/strong\u003e Reliable read range and consistent output make it suitable for both prototyping and finished product integration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e 125KHz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e UART (Serial)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 5V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCard Read Speed:\u003c\/strong\u003e \u0026lt;100ms\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003ePCB Construction\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Cards:\u003c\/strong\u003e 125KHz EM4100 \/ EM4200 and compatible formats\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDIY access control systems\u003c\/li\u003e\n  \u003cli\u003eSmart home automation projects\u003c\/li\u003e\n  \u003cli\u003eAttendance tracking systems\u003c\/li\u003e\n  \u003cli\u003eArduino \u0026amp; Raspberry Pi RFID projects\u003c\/li\u003e\n  \u003cli\u003eEmbedded electronics prototyping\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor more information on electronic component safety and best practices, visit the U.S. Consumer Product Safety Commission (CPSC).\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What frequency does this RFID card reader module operate at?\u003c\/h4\u003e\n\u003cp\u003eA: This RFID reader module operates at \u003cstrong\u003e125KHz\u003c\/strong\u003e, making it compatible with a wide range of standard EM4100, EM4200, and similarly formatted 125KHz ID cards and key fobs commonly used in access control applications.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What interface does the 125KHz RFID module use and how do I connect it?\u003c\/h4\u003e\n\u003cp\u003eA: The module uses a standard \u003cstrong\u003eUART (serial) interface\u003c\/strong\u003e, which makes it easy to connect to popular microcontrollers such as Arduino, Raspberry Pi, ESP32, and other development boards. Simply wire the TX\/RX pins to your microcontroller's corresponding serial pins and power it with 5V DC.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How fast does this RFID module read a card?\u003c\/h4\u003e\n\u003cp\u003eA: The 125KHz RFID card reader module is capable of reading a card in \u003cstrong\u003eunder 100 milliseconds\u003c\/strong\u003e, providing a fast and responsive experience for access control and identification applications.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the operating voltage for this RFID reader module?\u003c\/h4\u003e\n\u003cp\u003eA: The module operates at \u003cstrong\u003e5V DC\u003c\/strong\u003e, ensuring wide compatibility with standard power sources and development board power rails, making it convenient for both prototyping and embedded system builds.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What frequency does this RFID card reader module operate at?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This RFID reader module operates at 125KHz, making it compatible with a wide range of standard EM4100, EM4200, and similarly formatted 125KHz ID cards and key fobs commonly used in access control applications.\"}}, {\"@type\": \"Question\", \"name\": \"What interface does the 125KHz RFID module use and how do I connect it?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The module uses a standard UART (serial) interface, which makes it easy to connect to popular microcontrollers such as Arduino, Raspberry Pi, ESP32, and other development boards. 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