Hey I want to use GK309 Device like your GT02a but its not login, i think checksum error can you please help me to solve this Protocol is atteched [GK-309 protocol.pdf](https://github.com/freshworkstudio/gps-tracking-nodejs/files/2751846/GK-309.protocol.pdf)
Hey
I want to use GK309 Device like your GT02a but its not login, i think checksum error
can you please help me to solve this
Protocol is atteched
GK-309 protocol.pdf