Timer Levers are a mechanic in The Lost Mines. It serves as the core mechanic of The Attic and only appears there.
Usage
Although rare, Timer Levers can spawn at a random place in a room and will add either 30 or 60 seconds depending on the time remaining when the lever spawns. A Timer Lever is guaranteed to spawn in room 50, and another one is guaranteed to spawn at door 100, near Seek's goo; this specific lever adds 120 seconds to the remaining time.
Timer Levers are also useful to prevent Haste from killing players, as using one during his attack will despawn him.