Using this case for your Raspberry Pi 5 is easy. First, to install it on the DIN rail, press the rail lock with your forefinger and then push it out with your thumb as shown in the picture. Next, remove the bottom panel from the main part of the case. Then, use screws to fix your Raspberry Pi onto the bottom panel. After that, put the bottom panel back on, making sure it aligns with the buckle and USB connectors. Snap the other side of the case in place. Finally, insert the rail lock, being careful to get the correct side and not insert it upside - down.
When using the case, avoid exposing it to extreme temperatures or rough handling as this could damage the ABS material. To keep it in good condition, clean it regularly with a soft, dry cloth. If you're adding extra hardware, make sure it fits properly within the case to avoid any issues with closing or overheating.