Michel
Commands for setting up the tracker can be found in the instructions for the tracker or by contacting the seller or manufacturer of the tracker.
According to the information we have еhe default password for Sinotrack ST-901 is: 0000.
You can also find the instructions for your tracker at the link - https://gps-trace.com/en/devices/sinotrack-st-901#instructions
To reset the tracker settings, try the command - RESTART
You can also try to find out the password (and other tracker settings) by sending a command to it - RCONF
