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Fasizi RDM6300 125Khz EM4100 RFID Reader Module UART Output Access Control System for Arduino: Amazon.co.uk: Computers & Accessories
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Amazon.com: 13.56Mhz High Frequency Metal Waterproof Card Reader Anti-Theft and Anti-Smashing RS485 RS232 TTL Level Format DC5V 9-16V 24V 125Khz Non-Contact RF Card Swipe (125Khz, RS485, DC 9~16V) : Electronics
RFID Reader, PCR-340, 125kHz"13,56MHz, USB, RS232, KBW : Amazon.in: Electronics
Youmile 1 x RDM6300 RF Module ID Reader Module 125KHZ EM4100 RFID Card Reading Module with RFID Key Fob DuPont Cable S50 Blank Card for Arduino : Amazon.de: Business, Industry & Science
Amazon.com: RFID Reader 125KHz Reader Reads Both 1326 Family Proximity Cards & EM4100 ID Card USB Reader Emulae Keyboard for Linux Android Win iOS + 2Pcs Card : Electronics