It’s a clever torch stand. If it’s empty, you put your (long) torch in the top hole (stabilized by the bottom hole). If there is already one, you slide it two notches down instead and pivot the whole device (so it’s balanced). Same with the third, but pick/pivot out of plane with the others. Works with one hand, keeps houses from burning down, great widget.
Terror? Carbon monoxide alarm. Less for the sound, and more for the mental strife after what you are 99% sure it is a false alarm… as that 1% doubt (that might kill you in your sleep) keeps you from sleeping.