• all parts labeled “PSS” (two bases, two walls, two windows)
• PSS board
• batteries (2 - 4 pcs.)
• fasteners (brass PCHSS stands - М3х22, cylindrical head screws - М3х8 - 4 pcs., countersunk screws М3х10 - 4 pcs.)

1) Take the bottom base of the PSS (labeled: PSS ↓), install four PCHSS brass stands - М3х22 from above, fix them from below with four screws with countersunk head M3x10.

2) Install batteries (from 2 to 4) into the special seats of the PSS board

3) Insert the PSS board connectors into the cutouts of the window

4) Insert the PSS board connectors into the cutouts of the side wall, aligning the side surface of the window with the recess in the side wall.

5) Install the board with a side panel, a window and batteries on the bottom base. To do this, position the side wall protrusions and windows with holes in the base and snap into place. Fix the board with M3x8 cylindrical head screws.

6) Fix the second side panel to the base. To do this, position the side panel projections with the holes in the base and snap into place.

7) Fix the second window to the lower base. To do this, slide the window along the guides in the walls to the base and snap into place.

8) Attach the top cover (marked: PSS ↑) to the assembled body. To do this, combine the cutouts on the top cover and the protrusions of the two walls and two windows and snap into place, applying force. This is how the assembled PSS module looks like: