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{{Status|Canon}}
{{Ratings}}
{{Center|For other uses of the term '''beam''', see [[Beam|here]].}}
{{Era|H1|TF|H2|GOO|H3}}
{{Weapon infobox
{{Weapon
|image = [[File:H3-SentinelBeam.png|300px]] [[File:H2A-SentinelBeam-SideProfile.png|300px]] [[File:H5G - Safeguard Sentinel beam.png |300px]] [[File:HINF SentinelBeam Crop.png|300px]]
| image=[[Image:8311761-Full.jpg|300px]]
|manufacturer= [[Ferrarius Assembler Vats]]{{Ref/Book|Id=Enc22|Enc22|Page=393}}
| name=Sentinel Beam
|series= Containment/Sterilization Instrument<ref name="vis">'''[[Halo: The Essential Visual Guide]]''', ''page 168''</ref>
| manufacturer=Forerunners
|type= [[Particle beam weapon]]
| model=
|cost=
| type=Directed Energy Weapon
|variant=
| cost=
|service=*Forerunner era
| size=Handheld, Two-handed
*[[Human-Covenant War]]
| damage per hit=Chronological
*[[Post-Covenant War conflicts]]
| magazine=100 battery units
|affiliation = Forerunner
| maxammo=100 battery units
|weight=
| fire=Continuous Fire
|length=
| ammotype=*Minor:Orange Energy Beams
;Varies
*Major:Blue Energy Beam
{{Convert|63.7|cm|in}}{{Ref/Reuse|vis}}
| operation=
{{Convert|77.2|cm|in}}{{Ref/Reuse|Enc22}}
| rate of fire=Medium
|ammotype = Superheated negative charged ion particle beam{{Ref/Reuse|vis}}
| accuracy=Very High
|capacity=
| range=Medium to Long Range
|feed= 100 battery units housing
| era=Halo CE, but its usable on Halo 2 and Halo 3
|operation=
| counterpart=[[Plasma Rifle]][[MA5B]]
|rate= Automatic
| counterwep=[[Plasma]] weapons and explosives
|velocity =  
| affiliation=[[Forerunner]]
|optics=
|range = Infinite
}}
}}
{{Quote|You can totally dig the [[Aggressor Sentinel|bug-bots]]' own blasters out of their guts and use 'em yourself!|[[Otto-031]]{{Ref/Reuse|bl}}}}
The '''sentinel beam''', also known as the '''sterilization beam''',{{Ref/Book|Enc22|Page=326}} is a [[Forerunner]] [[directed energy weapon]], most commonly used by [[Aggressor Sentinel]]s.{{Ref/Reuse|Enc22}} The weapon is particularly effective against small [[The Flood|Flood]] outbreaks, and is efficient at stripping [[Energy shielding|energy shields]]. Although typically integrated into the structure of an Aggressor, it can be used as a hand-held weapon if scavenged from a destroyed machine.<ref name="bl">'''[[Halo: Blood Line]]''', ''[[Halo: Blood Line Issue 3|Issue 3]]''</ref><ref name="h2">'''[[Halo 2]]'''</ref><ref>'''[[Halo 3]]'''</ref>


==Design details==
{{HaloWikiLink|Sentinel_Beam}}
The Sentinel Beam was designed to effectively destroy Flood biomatter, and is intended for use against minor Flood outbreaks. Although the weapon is integrated into an Aggressor's structure, a limited internal power supply allows it to function independently if its wielder is destroyed, though it remains unknown how exactly users trigger the beam. However, when it is not hooked up to an Aggressor, its battery life is very short. The weapon projects a yellow-orange or blue beam of superheated anion particles, which is capable of effectively cutting through flesh, bone and metal.<ref name="Encyclopedia">'''[[Halo Encyclopedia (2009 edition)]]''', ''page 339''</ref> The Sentinel Beam was manufactured and developed by [[Ferrarius Assembler Vats]].{{Ref/Reuse|Enc22}}


Two variants of the Sentinel Beam are seen: the standard yellow-orange one in the silver housing, and the more powerful blue beam, which is encased in a gold housing.{{Ref/Reuse|h2}}
The '''Sentinel Beam''' is a [[Forerunner]] Directed Energy [[weapon]] that is equipped on a [[Sentinel]] and is the Forerunner construct's primary weapon.


There is a battery housing on side of the weapon, which has a calibration dial on it and can be adjusted by the user.{{Ref/Note|In-game, the calibration dial cannot be adjusted.}}{{Ref/Reuse|vis}}
==Introduction==
The Sentinel Beam is a [[Forerunner]] [[weapon]] that is an integral part of [[Sentinel]]s, who use it to control outbreaks of [[The Flood]]. It is more commonly projected as an orange beam of energy that can efficiently cut through the hordes of parasites, [[Infection Forms]] in particular, that the Sentinels have to deal with when an outbreak occurs. The blue Sentinel beam is a stronger, more efficient version of the common orange Sentinel Beam, but it overheats more quickly and its charge depletes quicker.
In [[Halo 3 multiplayer]], the Sentinel Beam appears as a default weapon in the bases on [[Backwash]] and on [[Desolation]], though it can be added to most maps using [[Forge]] on Halo 3.


The beams used by the [[Onyx Sentinel|Sentinels]] at [[Onyx]] were a golden color, with temperatures as high as 15,000 Kelvin.<ref>'''[[Halo: Ghosts of Onyx]]''', ''page 156''</ref> Although this variation of the weapon took significantly longer to charge, it is thought to have been capable of depleting a fully shielded [[MJOLNIR Powered Assault Armor/Mark V|MJOLNIR Mark V Armor]] suit. Furthermore, Onyx Sentinels were capable of cooperating to generate golden beams capable of destroying entire [[Covenant]] [[Covenant cruiser|cruisers]].  
==Combat Usage==
[[Image:Sentinel Firing.jpg|left|thumb|A Sentinel firing a Sentinel Beam]]
The Sentinel Beam, like the Energy Sword and Fuel Rod Gun, is not player-usable in [[Halo: Combat Evolved]], but it is usable in [[Halo 2]] and [[Halo 3]]. The more powerful blue version of the beam is only available in [[Halo 2]] campaign, though not in multiplayer.


===Advantages===
The Sentinel Beam runs on an non-rechargeable battery with a maximum charge of 100%. Like the [[Covenant]]'s [[Plasma]] weapons, it can temporarily overheat if 23% of the battery is used up in one continuous stream. It is effective against the [[The Flood|Flood]] and [[Sentinel]]s, and can be used to deplete shields like [[Plasma|plasma]] weapons.
Continuous contact from a Sentinel Beam can be devastating even for armored opponents, and its ability to rapidly drain energy shields makes it an effective weapon against the Aggressors themselves. The weapon can temporarily overheat if 20% of the battery is used up in one continuous shot; the weapon vents excess heat in an attempt to counter this.  


It is, obviously enough, extremely effective when used against Flood, and will cut down any form — including the vaunted [[Flood pure form|pure forms]] — if aimed properly.
Continuous contact from a Sentinel Beam can be devastating against any opponent.


It possesses a decent damage rate, amazing accuracy and range, and sustained attacks with the weapon will inflict large amounts of damage. The weapon's [[melee]] attack is about as strong as that of a [[M41 SPNKR|Rocket Launcher]], and is likewise considerably slow. The melee is also capable of disintegrating a [[Flood combat form]], although this process takes many hits and is impractical in most situations.
The beam used by the [[Sentinel]]s at [[Onyx]] was  a golden color, an odd exception to the usual rule of blue beams being the most powerful,  Although this variation of the weaponstook significantly longer to charge, it is thought to have been capable of destroying a fully shielded [[Spartan]], and gained exponential increases in power when multiple Sentinels worked together, to the point where it could be used to destroy entire fleets of [[Covenant Cruiser]]s. It may be worth noting that there were some other differences between the Sentinels of Onyx and the ones that appear on the Halo Installations; these were pointed out by [[Dr. Halsey]]. These are listed under [[Onyx Sentinel]].


===Disadvantages===
In the Halo 2 campaign, the Sentinel Beam is a deadly, all-around good weapon. It sports a high rate of fire, amazing accuracy & range, and great damage against both shielded and unshielded opponents. The beam's targeting reticule is also reasonably centered, providing a better aim. The weapon's melee attack is about as strong as that of the [[Rocket Launcher]]'s, and is likewise considerably slow. Two variants of the Sentinel Beam are seen in the campaign: the standard yellow-orange one in the silver housing, and the more powerful blue beam, which is encased in a gold housing. While the blue version is more powerful, it also quite rare and will overheat faster than the standard beam.
When compared to the standard silver variant, the golden Sentinel Beam is more powerful, however it overheats more quickly and its charge depletes faster. This difference is very similar to the relationship between the Covenant's {{Pattern|Okarda'phaa|plasma rifle}} and the {{Pattern|Kewu R'shi'k|plasma rifle}}.


==Variants==
{{spoilers}}
*'''Gold Aggressor Sentinel Beam''': A Sentinel Beam utilized by the [[Aggressor Sentinel Eliminator|Sentinel Eliminators]] from [[Installation 05]]. It fires a stronger blue beam.
*'''Safeguard Sentinel Beam''': The sterilization beams of [[Safeguard Sentinel]]s are highly efficient at containing and cauterizing intrusions into their assigned protectorate. Beam projectors stolen from these Forerunner constructs are still extremely effective, but do suffer from overheating and a limited internal power supply.<ref>[https://www.halowaypoint.com/en-us/news/bounty-hunters '''Halo Waypoint''': ''Canon Fodder 12/7/2016: Issue 94 Bounty Hunters'']</ref>
*'''[[Arcane Sentinel Beam]]''': White painted Sentinel Beam with a mag that was decreased from 250 to 80 but has greatly increased damage. Used by [[Thav 'Sebarim]] during the [[Battle for Zeta Halo]].
<gallery>
File:H2A gold sent beam.png|Gold Sentinel Beam.
File:H5G - Safeguard Sentinel beam.png|Safeguard Sentinel beam.
File:HINF SentinelBeam Crop.png|Installation 07 Sentinel beam.
File:HINF SentinelBeam Arcane Crop.png|Arcane Sentinel Beam.
</gallery>


==In-game information==
The beam makes another appearance in [[Halo 3]], with a few graphical upgrades and several technical fixes. It first appears on [[The Ark (Level)|the Ark]], where it can be gained by destroying one of the Sentinels patrolling the area. Unlike its Halo 2 counterpart, the weapon now has virtually infinite range and fires a much stronger beam that, if held consistently on an enemy, can destroy them within a few seconds. It is, obviously enough, extremely effective when used against Flood, and will cut down any form, including the vaunted Pure Forms, if aimed properly. The beam does not spawn on any multiplayer maps using the standard weapons settings, and players cannot spawn with them in any game type, custom or otherwise.  However, the weapon may be added to a map through the Forge editor.
{{Article quote|Continuous fire, directed hardlight energy weapon useful for stripping shields.{{Ref/Game|HI|Academy - Weapon Drills - Sentinel Beam description}}}}
=== Changes from ''Halo: Combat Evolved'' to ''Halo 2'' ===
* Like the [[Type-1 energy sword|Energy Sword]] and the [[Unidentified fuel rod gun|Fuel Rod Gun]], the Sentinel Beam cannot be used by players in ''[[Halo: Combat Evolved]]''. In ''Halo 2'', the Sentinel Beam can finally be wielded.
* A golden Aggressor variant is introduced along with its blue-colored beam. This harder-burning beam is more powerful, but it overheats and depletes faster.


=== Changes from ''Halo 2'' to ''Halo 3'' ===
Also worth noting is the version of the beam that the Monitor 343 Guilty Spark makes use of.  In Halo 3, the construct uses the integrated weapon to destroy a Flood Combat Form, mortally wound Sergeant Avery Johnson and fight off the Master Chief and the Arbiter. The beam he fires is more powerful, twice as thick as the usual Sentinel Beam, and is bright red in color rather than orange.
* The Sentinel Beam has a few visual upgrades and several technical fixes.  
* The weapon now has virtually infinite range and fires a much stronger beam that, if held consistently on an enemy, can destroy them within seconds.


=== Changes from ''Halo 3'' to ''Halo 4'' ===
==Character Compatibility==
*The beam fired is now colored purple.
*[[Elites]]
*The Sentinel Beam can no longer be acquired, even after killing an Aggressor Sentinel.
*[[Spartan]]s
*[[Sentinels]]
*[[Monitors]]
*[[Flood]](Halo 2 Humans)
*[[Flood]](Halo 2 Elites)


===Changes from ''Halo 2'' to ''Halo 2: Anniversary''===
==Multiplayer==
* In the remastered multiplayer component of ''Halo 2: Anniversary'', the Sentinel Beam has been made noticeably more powerful than in the original ''Halo 2''.<ref name="H2A teamB">[http://teambeyond.net/warlock-coming-halo-2-anniversary/ '''Team Beyond''': ''Warlock coming to Halo 2: Anniversary'']</ref>
[[Image:Sentinel Warthog.jpg|thumb|Right|A Spartan firing the weapon from the passenger seat of a Warthog. Note the single handed wielding.]]The sentinel weapon is a rarity in multiplayer games, and if available, it should be your weapon of choice. In ''[[Halo 2]]'', the Sentinel Beam is useful, but in ''[[Halo 3]]'' it is one of the best weapons in the game. On many Infection game types, when zombies have instant death, the sentinel beam is ridiculously powerful, allowing a player to sweep an area at any range, killing all foes in said area. The sentinel beam is one of the few weapons that is wielded in both hands on foot, and in one hand in a vehicle.
* The lights on the Sentinel Beam now change color and build up along the firing channel's shroud to indicate the level of the weapon's heating.{{Ref/Reuse|H2A teamB}}


=== Changes from ''Halo 2: Anniversary'' to ''Halo 5: Guardians'' ===
===Other tips===
* Weapon can now be [[Smart Scope|Smart-Scoped]].
====Halo 2====
* Players killed by the Sentinel Beam now disintegrate upon death.
*The weapon can actually make it harder for enemy player to see if it is aimed at their head but should only be done at close to medium range.
* The insignia on the back of the Sentinel Beam changes colors depending on how close it is to overheating.
*This is best used in a small map like [[Warlock]]. Also good for [[Headlong]] as long as you have other strong weapons with you.
* When the Sentinel Beam is smart linked, the Spartan will hold it sideways.
*If the Sentinel Beam (SB) is the only weapon you have, conserve ammo and rely on melee as much as possible. The SB has a greatly effective and quick melee. Only fire the weapon when your target is far away, because ammo goes fast. Melee in CQB, and avoid deadly crossfire. Replace as often as possible.
*If you have other weapons on the map, use those. The Sentinel Beam is effective, but hard to aim. Only use it if you have advantages over other players such as better aim, etc.
*Use grenades! A Sentinel Beam is horrendously useful against flesh, so a quick grenade toss is all that is needed to take down the opponent's shields and seal the deal.
*A widely reputed myth about this weapon is that it can score head shots. This is partially true. Like the [[Magnum]], [[Battle Rifle]], [[Carbine]], [[Sniper Rifle]], and [[Beam Rifle]], it can get head shots, but only if you are already aiming at the head when you start shooting- i.e., it will not work if you sweep the beam to the target's head.
*The beam is accurate to any distance.
*It is the best weapon (except for the M90 Shotgun) for destroying sentinels


=== Changes from ''Halo 5: Guardians'' to ''Halo Infinite'' ===
====Halo 3====
* The Sentinel Beam runs on ammunition instead of a battery.
*During a game of Infection, the Sentinel Beam is an effective way to rid yourself of chasing zombies. But take care on where you aim. Since the laser is easy to spot and is likely to give your position away if the shot goes astray.
* The Sentinel Beam’s appearance is based more heavily on the [[Halo 2: Anniversary]] design.
*When loading up vehicles, a Sentinel beam in the passenger seat is an incredibly deadly tool. The most flexible location is in the back seat of a [[Mongoose]], although the passenger seat of a [[warthog]] is also useful. The advantage of vehicle bound Sentinel Beams are that it can clothesline foes.
* The Sentinel Beam pierces through multiple targets depending on the angle.
*If a head shot does not work, try aiming it at the stomach area.
* The Sentinel Beam emits the same particle effects as the [[Heatwave]] and the [[Cindershot]] on the front of the weapon.
*Steady shots can make the Sentinel Beam the ultimate sniper weapon. Fire at a target, then sweep the area. You will eventually meet your target, and they will have a difficult time evading the beam.
* The Sentinel Beam has a harsh vertical recoil as the weapon is fired.
*The Sentinel Beam has an extremely large power consumption rate, about 5%/second, so always carry a backup weapon and try to save the Beam for emergencies.
*The Sentinel Beam is also very useful for taking down [[Brute]] [[Power Armor|Armor]] quickly.


==Trivia==
==Trivia==
{{linkbox|gallery=yes|gameplay=yes|gallerypage=Images of Sentinel Beam}}
*This is the only [[Forerunner]] [[Weapon]] wieldable and seen in the Halo Trilogy.
*The only way to use the Sentinel Beam in the ''Halo: Combat Evolved'' engine without extensive use of the Developer mode is to use ''[[Halo Custom Edition]]''. Such usage is to acquire the Sentinel Beam involves using bump possession to attain an Aggressor Sentinel, then switching back to Master Chief and have him destroy said Aggressor, and exchange a weapon for the Beam. The Beam is not visible from the first- or third-person view, and if the player presses the fire button a damaging red beam will appear from the center of the screen.
*It is possible to say that the [[Automated Turret]] uses the [[Sentinel Major]] beam from Halo 2.
*Flood Combat Forms are able to wield Sentinel Beams with one hand.
*In [[Halo:CE]], when a Sentinel is destroyed, the part that in Halo 2 and 3 where it will be used as a Sentinel Beam is blue like in [[Halo 3]], not reddish-orange.
*In ''Halo 2'', an [[Enforcer]] will fire an invisible Sentinel Beam if all of its other weapon system have been destroyed. If the Enforcer is destroyed, there will not be any Sentinel Beam left in its wreckage for the player to use.
*In [[Halo 2]] when a Sentinel Major's Sentinel Beam is dropped it had the steel color of a Minor's but when picked up is colored gold.
*In ''Halo 2'', if the player throws a grenade when their Sentinel Beam is overheating, sometimes the animation for throwing the explosive will not appear, and a grenade will just "fly" out from the player.
*In [[Halo 2]], there are two versions of the Sentinel Beam, one being red, the other blue. The blue is more powerful and overheats more easily.
*In ''Halo 3'', the beam appears to impact with large force, as it is able to flip an airborne Warthog with minimal effort, a feat that not even explosive weapons can achieve. This is easily witnessed during the Warthog run near the end of the game.
*In [[Halo 3]], there are sparks that come off of the laser when fired.
*In ''Halo 3'', the weapon does not spawn on any unaltered multiplayer maps, and [[gametype]]s cannot be used to force it to spawn; it is only available in [[Forge]]d map variants, the [[Bungie vs World]] playlist and the Maption Sack playlist. This is likely due to the weapon's increased power and range, which make it devastating in Multiplayer matches.
*The Sentinels on Onyx have Sentinel beam's with temperatures as high as 15,000 degrees Kelvin. In [[Halo: Ghosts of Onyx]].
*The [[Forerunner automated turret]] in ''Halo 3'' fire beams similar to that of the Sentinel Beam.
*As of right now, the Sentinel Beam is not available by default on any [[Halo 3]] map. This might change, when [[Bungie]] releases the [[Legendary Map Pack]].
*The Covenant [[M'tara-pattern focus rifle|Focus Rifle]] is an attempt at reverse-engineering the Sentinel Beam, though it has several functional differences.<ref>'''Halo: The Essential Visual Guide''', ''page 71''</ref>
*The sentinel beam also has unlimited range.
*Although the Aggressor Sentinel does make an appearance in ''Halo 4'', when destroyed by Covenant remnant forces, if the wreckage of the sentinels is investigated, the player will find no leftover Sentinel Beams. This is because sentinels in ''Halo 4'' disappear instead of producing pieces of wreckage.<ref>'''Halo 4 Prima Official Game Guide''' (Collector's Edition), page 110</ref>
*Some have speculated that the [[Spartan Laser]] was based on the Sentinel Beam. This is, if unlikely, certainly possible as humans are alleged to have discovered Forerunner structures before meeting the [[Covenant]].
*For some reason, in ''Halo 2: Anniversary'', both the basic and gold versions of the Sentinel Beam have the same in-game model after they leave the body of its host sentinel.


==Gallery==
==Video==
===''Halo 2''===
<kaltura-widget kalturaid='316504' size='M' align='L'/>
<gallery>
<br clear="all" />
File:H2A Base Beam Hud1.png|First-person of the Sentinel beam.
==References==
File:H2A Base Beam Hud2.png|First-person of the Sentinel beam.
<references/>
File:H2-SentinelBeam-Side-Screen.png|An in-game side view of a Sentinel beam.
==Related Links==
File:H2-SentinelBeam-Side.png|Extracted view of the Sentinel beam.
File:H2A Gold Beam Hud1.png|First-person of the Gold Sentinel beam.
File:H2A Gold Beam Hud2.png|First-person of the Gold Sentinel beam.
File:H2A Gold Beam.png|An in-game side view of a Gold Sentinel beam.
File:H2 Compare beams.png|Both Sentinel beam designs side by side.
</gallery>
===''Halo 3''===
<gallery>
File:8311761-Full.jpg|A Sentinel beam on [[Installation 00]].
File:H3-SentinelBeam-FirstPerson.png|First-person view of the Sentinel beam in the player's hands.
File:Halo-3-20070923023602661.jpg|The Sentinel beam's targeting reticule.
File:Sentinel Warthog.jpg|A player firing the weapon from the passenger seat of a Warthog. Note the single-handed wielding.
File:H3_SentinelFiring.jpg|A Sentinel Aggressor firing its Sentinel beam in.
</gallery>
===''Halo 4''===
<gallery>
File:HTMCC-H4 AggressorSentinels 2.png|Aggressor Sentinels firing their Sentinel beams in ''[[Spartan Ops]]''.
File:HTMCC-H4 AggressorsVsKnight 2.png|Sentinels firing Sentinel beams at a [[Promethean Knight]] in ''Spartan Ops''.
</gallery>
===''Halo 2: Anniversary''===
<gallery>
File:H2A-SentinelBeam-Concept.jpg|Concept art for the Sentinel beam in ''[[Halo 2: Anniversary]]''.
File:H2A-SentinelBeam-Render-02.jpg|Unfinished renders of the Sentinel beam in ''Halo 2: Anniversary''.
File:H2ACP-SentinelBeamHUD.png|First-person view of the Sentinel beam in ''Halo 2: Anniversary'' campaign.
File:H2A Base Beam Hud4.png|First-person view of the Sentinel beam being fired in ''Halo 2: Anniversary'' campaign.
File:H2A Base Beam.png|An in-game side view of the Sentinel beam in ''Halo 2: Anniversary'' campaign.
File:H2A Gold Beam Hud3.png|First-person view of the Gold Sentinel beam in ''Halo 2: Anniversary'' campaign.
File:H2A Gold Beam Hud4.png|First-person view of the Gold Sentinel beam being fired in ''Halo 2: Anniversary'' campaign.
File:H2A Compare beams.png|Both Sentinel beam designs side by side in ''Halo 2''.
File:Warlord-5.png|The Sentinel beam being used on the ''Halo 2: Anniversary'' multiplayer map [[Warlord]].
File:H2AMP-SentinelBeam.png|A Sangheili firing a Sentinel beam on [[Skyward]].
</gallery>
===''Halo 5: Guardians''===
<gallery>
File:H5G-sentinelbeam-sketches.jpg|Early concept art for the Safeguard Sentinel beam in ''[[Halo 5: Guardians]]''.
File:H5G-sentinelbeam-sketches 2.jpg|Concept art nearing the final design.
File:H5G-sentinelbeam-concept-handles.jpg|Concept art of Sentinel beam handles.
File:H5G-sentinelbeam-concept-rough.jpg|Rough concept art of the Sentinel beam.
File:H5G sentinel beam concept art final.jpg|Finalized concept art.
File:H5G-SafeguardSentinelBeamHUD.png|First-person view of the Safeguard Sentinel beam.
File:H5G-SafeguardSentinelBeamzoom.png|[[Smart scope]] with the Safeguard Sentinel beam.
File:H5G-SafeguardSentinelBeamOverheat.png|The Safeguard Sentinel beam overheating.
File:H5G-SafeguardSentinelBeamFiring.png|A [[CENTURION-class Mjolnir|Centurion]]-clad [[SPARTAN-IV program|Spartan-IV]] firing the Safeguard Sentinel beam.
File:H5G-SafeguardSentinelBeamOverheat-ThirdPerson.png|A Centurion-clad Spartan-IV with an overheated Safeguard Sentinel beam on [[Torque]].
</gallery>
===''Halo Infinite''===
<gallery>
File:HINF-Concept-SentinelBeamSketch.png|Concept sketches of the Sentinel beam.
File:HINF-Concept-SentinelBeam.jpg|Finalized concept art of the Sentinel beam.
File:HINF-SentinelBeamFirstPerson.png|First-person view of holding the Sentinel beam.
File:HI-sentinelbeam-firing.png|First-person view of the Sentinel beam being fired.
File:HINF SentinelBeam HUD Reload.png|First-person view of the Sentinel beam reloading.
File:HINF Aggressor Beam.png|An Aggressor Sentinel fires its Sentinel beam.
File:HINF-SentinelBeam-ThirdPerson.png|A [[FIREFALL-class Mjolnir|Firefall]]-clad Spartan holding the Sentinel beam.
File:HINF Sentinel Beam Disintegrating Elite.png|[[John-117]] uses a sentinel Beam to disintegrate a [[Banished]] [[Sangheili Mercenary]].
File:HINF Command Spire disintegrating grunt.png|The sentinel beam being used to vaporize an [[Unggoy Conscript]].
File:HINF Nexus hunter vaporized.png|The sentinel beam vaporize a [[Mgalekgolo]].
</gallery>


===''Halo Online''===
*[[Sentinels]]  
<gallery>
File:HO-SentinelBeam.jpg|First-person view of the Sentinel beam in ''[[Halo Online]]''.
</gallery>


==List of appearances==
<br clear="all">
*''[[Halo: Combat Evolved]]'' {{1st}}
{{WepList}}
*''[[Halo: The Flood]]''
[[Category:The Forerunner]]
*''[[Halo 2]]''
[[Category:Held Weapons]]
*''[[Halo 3]]''
[[Category:Weapons]]
*''[[Halo Wars]]''
*''[[Halo: Blood Line]]''
*''[[Halo: Combat Evolved Anniversary]]''
*''[[Halo 4]]''
**''[[Spartan Ops]]''
*''[[Halo: Broken Circle]]''
*''[[Halo 2: Anniversary]]''
*''[[Halo: Last Light]]''
*''[[Halo 5: Guardians]]''
*''[[Halo Wars 2]]''
*''[[Halo: Divine Wind]]''
*''[[Halo Infinite]]''
 
==Notes==
{{Ref/Notes}}
 
==Sources==
{{Ref/Sources}}
 
{{Forerunner|weapons|category=no}}
[[Category:Forerunner weapons]]
[[Category:Directed-energy weapons]]

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