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The RFID reader module can read 125K EM4100 series (or compatible) RFID cards. The module is very convenient to use, connected to the matching card reader antenna (coil) serial port to connect the single-chip microcomputer, turn on the power.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.