Sentence examples for an signal from inspiring English sources

The book's front cover features a facial recognition-enabled camera which detects a "neutral" face, sending an signal that tells the Arduino inside to unlock the book.

Similarly HIF1α stimulates the expression of the vascular endothelial growth factor (VEGFA) which functions as an signal mediating vasculogenesis and angiogenesis [ 37].

A blackout was a signal to stand.

A casual choice—or a signal perhaps?

It's a weapon and a signal.

Have a signal for a change up.

A fire kit. a signal mirror.

A signal?

Suddenly, a signal came.

They send a signal.

Yellen was sending a signal.