Or controlling the heating and AC systems at 19 schools under its jurisdiction using a system that sends out commands over short-wave radio frequencies https:/

Or controlling the heating and AC systems at 19 schools under its jurisdiction using a system that sends out commands over short-wave radio frequencies https://www.popularmechanics.com/technology/infrastructure/a16010/30-year-old-computer-runs-school-heat/ https://www.popularmechanics.com/technology/infrastructure/a...