I offer single-signal powered materials.They are included from a spark to PSCN and turned off by themselves.
I offer: single-signal pressure pump (SSPP);
single-signal powered void (SSPV);
single-signal heat switch (SSHS);
single-signal powered clone (SSPC);
single-signal switch (SSSW).
They will have a life that defines his time of action. Initially, the life will be 5, but you can change it. These elements will simplify many of the mechanisms
Even i this isn't added to the base game, I would LOVE to see this in a mod. Making a loop connected to NSCN is a hassle, and if a constant power source is attached, it doesn't even keep the element powered up properly, it just ends up flashing (especially with something like LCRY)
I am not sure but if you are asking for pump etc to deactivate themselves then it can be easily done with the existing element combinations without flashing behavior if done correctly.
If you guys want then i can make a demo save.