The intelligent glass, we also call smart switchable glass(privacy glass).
It can turn from opaque to transparent through controlling the power supply. It is 220V input, and 60-70V output.
The core of the glass we called: PDLC film, it is liquid crystal, when it connect with the wire, the molecular of the liquid crystal will be in line, so that it can be transparent.
Application: hotel shower door, window, office portion, projector, workshop or some where need to keep in privacy.