Death clock

The Death Clock is a scanning device that monitors a Cybertronian's Spark to calculate a time of death for him. Drift disapproves of them.

Fiction

IDW Generation 1 continuity

Ratchet used a Death Clock to monitor the contractions of the wounded Ultra Magnus's shrinking spark to calculate a time of death for the Autobot. Later, Tailgate accidently knelt in front of the Death Clock's scanner, and it calculated that he had three days to live. The Gloaming