Toggle Power is a Power category block. It has an On state and and Off state. When On, it will power any connected Source blocks, triggering their audio, and keeping them on until either switched to Off or disconnected. It will also power any connected Particle Emitters or Lasers in the same way, both of which need to be powered to operate. When On it essentially works the same as a Power block.
It’s On/Off state can be selected manually, but can also be switched if the block comes into contact with any particles fired by Particle Emitters, or laser beams fired by Laser blocks.
The Toggle Power block has one option which manually sets wether it’s On or Off.
Blocks in the Power category can be combined to create interesting reactions, and self-playing environments. Read more on this subject on the Power page.