Count the lines before you count the switches. A smart switch earns its piece of tech trash only where you need to act while away from base: the feed to the outside auto turrets, say, or the outdoor lights. Everything you only touch while standing in the base gets a plain switch, frags at a Level 1 bench and no tech trash at all.
The blueprint costs little scrap, so it is rarely the hold-up; the tech trash is. One switch placed before a branch cuts everything behind it, which is why a couple of well-placed switches beat one on every lamp.
And craft them once the turrets they will run exist. A smart switch waiting in a box for a turret that never got its camera is circuitry your next C4 did not get.
Questions
Smart Switch ×10: how many resources?
High Quality Metal ×30, Tech Trash ×10.
Which workbench does Smart Switch need?
Workbench level 2.
How long does Smart Switch take to craft?
25 s for one, every step included.
How much scrap does researching Smart Switch take?
