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HELLO can anyone tell me how to check sm20 finger print module is working or not with serial port terminal??
Hi
Check out this link: https://www.arian-negar.com/download/CAMA-SM25/CAMABIO%20SM25%20User%20Manual.pdf
In this link refer page no. 57 which tells you how to test connection with sm20 module. This link also shares various other commands associated with this fingerprint module.