Projects › Projects › finger print module SM20 › HiCheck out this link: ]]
February 23, 2018 at 9:15 am #14758
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.