Piston: Difference between revisions

{{Status|Canon}}

[[File:H2A-Forerunner piston.png|thumb|250px|A closed piston within the [[Sentinel Wall]].]]

A '''piston''' is a [[Forerunner]] device. They are installed within facilities like the [[Sentinel Wall]] as vertical "[[door]]s" to get from level to level within the multi-tiered construct. The pistons have sensitive control-strips that open the piston when fired upon or switched. The piston then splits in two, and allows [[Aggressor Sentinel]]s and [[Constructor]]s to move to the lower or to the higher level they desire. The openings are fairly large, however, and therefore allow larger creatures, such as [[Sangheili]], to move through. However, the shafts pistons guard are almost always vertical, so moving up through them is impossible without a thruster of some kind. Some pistons do not split in two, but the ones that reveal the winding tunnels just lift upwards, downwards and away.<ref>'''[[Halo 2]]''', campaign level ''[[Sacred Icon (level)|Sacred Icon]]''</ref>

*An alternative for activating the pistons besides simply pressing ''X'' is meleeing or shooting the pistons. On [[Heroic]] or [[Legendary]], pistons cannot be triggered, but must be shot or meleed.

*It takes four melees to fully activate the piston. The Piston's holocontrols change shades from green-blue to dark blue as they take more damage.

*Pistons are only present in the level [[Sacred Icon (Level)|Sacred Icon]] in ''[[Halo 2]]'' and in the level [[Nexus]] in ''[[Halo Infinite]]''.

*In ''[[Halo 3: ODST]]'', in the level [[Data Hive (level)|Data Hive]] which is set in [[New Mombasa]]'s [[New Mombasa Data Center|Data Center]], devices called "Data Stacks" are encountered. They function similarly to the pistons.

 

 

*''[[Halo 2: Anniversary]]''

*''[[Halo Infinite]]''

 

 

[[Category:Forerunner technology]]