FPM10A Finger print sensor

Hardware connection: 

• Module via a serial communication interface, directly with microcontroller communication: Module data transmission feet (2 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).
• For the RS-232 level (for example: PC machine) for PC communication, increase the level conversion between the module and the host computer

Important Document Related to How to use Sensor

https://cdn-learn.adafruit.com/downloads/pdf/adafruit-optical-fingerprint-sensor.pdf