This is probably the most fun I had with the connection theme. I absolutely loved the logic puzzles of all the different types of switches. I ended up beating all 5 levels! :p
I will say I would probably add a few suggestions in case you decide to update your game.
1. I would probably add a cutting tool where with a button on the keyboard, you can just pull out some scissors and draw a line you wish to make a disconnect. It's just a bit tiring having to move the mouse via trackpad from robot 1 to switch and disconnect robot 1 over to robot 2.
2. For more levels in the future, I would add more components to spice things up. Maybe add a OR module where it only accepts 1 switch out of 2 possible switches. Maybe implement a motion sensor, light fixtures for visiblity and/or turret for more stealthy puzzles, conveyor belts, and possibly more robots to control such as a crane to lift up boxes for obstacles/button presses, a floating drone to navigate through mazes or carry specific robots to safety.
Those are a few ideas I had in case you plan on adding more to the game, although no worries if you prefer to keep the game as it is. Overall, Awesome job on the game! :P