Optical Fingerprint reader Sensor Module sensors All-in-one For Arduino Lock CK

(Split: Fingerprint sensor: 56 ╳ 20 ╳ 21.5mm. Foot TD) connected to the data bit machine receiving end (RXD), data receiver module feet (3 feet RD) connected to the data sender bit machine (TXD). PC Interface: UART (TTL logic level) or USB2.0 / USB1.1.

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