Switch N12 (ID=24612)
The Yellow Toggle Switch at the square marked N12 reversez:

• the eastern Two-Way Arrow in square F7. Also see Switch F7.
• the eastern Two-Way Arrow in square H9. Also see Switch H9.
• the Two-Way Arrowz in square M10.
• the Two-Way Arrowz in square N11.
• the Two-Way Arrowz in square N13.