Alarm Clocks
The Alarm Clocks are one of the 29 Props featured in Dead by Daylight that was added with Patch 3.1.0.
Overview

If The Nightmare is chosen as the Killer for a Trial, 5 Alarm Clocks will appear in random locations throughout the Trial Grounds.
They appear as plain white dressers until a Survivor is drawn into the Dream World; then the Alarm Clocks appear atop the dressers as they become bloodied and dilapidated.
Mechanic
Survivors trapped in the Dream World can use the Alarm Clocks as a way to wake themselves up. If a Survivor uses it to wake themselves up, they get a total immunity from falling asleep which lasts for 30 seconds.
Once they fall asleep, Survivors will be able to use any Alarm Clock which have their Aura revealed. Once a Survivor uses one, that Alarm Clock goes on a global cooldown and cannot be used by any Survivor
for 45 seconds.
Trivia
- Like Cages of Atonement
and Pools of Devotion
, interacting with Alarm Clocks is not affected by any Unlockables.