The detector itself is 3-axis accelerometer, and the axis' are marked on the unit. If there is something that the software considers a seismic wave, it records it.
It records x,y,and z peak "g" forces;
It records whether it triggered the alarm (exceeded adjustable setpoints);
It records duration of event;
It records date and time of event;
All of the data is easily retrievable from the local unit from the LCD display.
All you have to do is push a few buttons on the front panel, scroll through the menus, and away you go.
If I remember the manual correctly, the 2700 and above have actual download data capabilities though an IR port, but since I don't have the actual manual with me, I can't answer that offhand.
Cheers!