telltales
tell-tales
noun
Signs or clues that reveal something secret or hidden.
"Her nervous fidgeting were telltales of her anxiety."
noun
A device, often on a dashboard, that indicates a state or operation.
"The car's telltales showed low fuel."
Thesaurus
Synonyms: blabbermouth, tattler, taleteller, talebearer, tattletale, telltale