Generic 2N7000 datasheet, 94.6 KB PDF, stored in the schematic section with no vendor, suffix or revision in its name. The 2N7000 is a long-established small-signal N-channel MOSFET found in switching, relay-driving and level-shifting circuits. Any PDF viewer will open it. Check the pin diagram carefully, since lead order can vary between manufacturers, and read the absolute maximum ratings and on-resistance figures before using the part as a replacement.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @cyberlanelectonik. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.