Description The Grove - 125KHz RFID Reader is a module used to read uem4100 RFID card information with two output formats: Uart and Wiegand. It has a sensitivity with maximum 7 cm sensing distance. Features - 7cm sensing distance - 125kHz RFID Card Read Only - Arduino Library - Selectable output format: UART or Wiegand. - 4Pins Electronic Brick Interface - High Sensitivity For all Grove users (especially beginners), we provide you guidance PDF documents. Please download and read through Preface - Getting Started and Introduction to Grove before your using of the product. https://elecena.pl/product/9696475/113020002-arduino-grove-125-khz-rfid-reader-uem4100 2017-08-05 https://elecena.pl/product/9696475/113020002-arduino-grove-125-khz-rfid-reader-uem4100 2018-01-25 https://elecena.pl/product/9696475/113020002-arduino-grove-125-khz-rfid-reader-uem4100 2021-05-30 https://elecena.pl/product/9696475/113020002-arduino-grove-125-khz-rfid-reader-uem4100 2021-11-19 https://elecena.pl/product/9696475/113020002-arduino-grove-125-khz-rfid-reader-uem4100 2022-10-15 https://elecena.pl/product/9696475/113020002-arduino-grove-125-khz-rfid-reader-uem4100 2023-09-07 https://elecena.pl/product/9696475/113020002-arduino-grove-125-khz-rfid-reader-uem4100 2025-02-08 https://elecena.pl/product/9696475/113020002-arduino-grove-125-khz-rfid-reader-uem4100 2026-02-20 https://elecena.pl/product/9696475/113020002-arduino-grove-125-khz-rfid-reader-uem4100 2026-10-01