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0 · RFID Hotel keychain nfc keyforb
1 · NFC Waterproof Hotel Keychain
What is NFC technology? The NFC technology uses a radio link operating at 13.56 MHz to establish a wireless connection between a reader and a tag. To ensure security, the communication range is typically limited to a few .
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Use this program to interface between the ACR122U-A9 and an RFID card/chip. Connect your ACR122U-A9 and place an RFID card/chip in the bay. The LED light should light up green when the card is inserted into the bay. Change the .
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