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RFID module, MFRC522 with UART, SPI, I2C interface

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The MFRC522 is an RF Module that consists of an RFID reader, RFID card and a key chain. The module operates 13.56MHz and supports 3 types of interfaces: SPI, UART and I2C. For example using I2C interface will allow you to connect plenty of RFID devices on just 2 wires. Learn More

$4.99 As low as $4.29

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Opto Coupler/Interrupter module

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88% of 100

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OptoCoupler - photo interrupter module Learn More

$0.89 As low as $0.79

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