1x micro:bit RFID Expansion 1 x RFID Card 1 x RFID Keyfob RFID Expansion for micro:bit is an RFID device UART interface running at the frequency of 125KHz, Programmable Buzzer, two Dedicated slots for Servo Motor Interfacing compatibles with all the variants of micro:bit, V1 and V2 both RFID Expansion for micro:bit
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