RC522 RFID Reader Module Serial 13.56 MHz Light dependent resistor so you only need 8
USD199.99
USD241.99
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- USA
- CAN
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Description
RC522 RFID Reader Module Serial 13.56 MHz Light dependent resistor so you only need 8 so you only need 8 microcontroller pins (4 columns and 4 rows) to scan through the pad low cost digital temperature and humidity sensor
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