Gas Vent

Knockout or toxic gas vent rigged to intrusion.

Station security loves this one because it ends a fight without burning the budget -- literally. A grille over a vent tucked behind a wall panel, slaved to motion or a tamper switch. Cross the threshold or trigger the line, and a measured burst floods the room: knockout for crowd control, neurotoxin for things they really want gone. The tell is the grille, the seam, or the faint chemical reek. A good Vacuum-purge plus a respirator makes the cloud someone else's problem.

Rules Reference

Field	Value
Detect / Dc	15
Detect / Note	Sensors & Signals (DC 13) detects the pressure line behind the wall; Survival (DC 13) catches the chemical reek.
Detect / Skill	Perception
Prevented By	Slaved release valve, Sealed atmosphere (vacuum discipline)
Reset	Automatic once the pressure line refills (1d4 minutes).
Save / Dc	16
Save / Note	Respirator or sealed suit grants +5 to the save; unconscious on a failure by 5+.
Save / Type	Fortitude
Trigger / Detail	Releases on motion, on breaching a wired panel, or on a coded SecOps go-code.
Trigger / Type	motion / tamper / coded
Category	hazard

Disarm

dc: 18

Field	Value
dc	18
note	Vent the room manually at the access panel; failure by 5+ fires the burst.
skill	Engineering

dc: 16

Field	Value
dc	16
note	Cut the line at the manifold; faster, but leaks residual gas.
skill	Security/Locks

dc: 18

Field	Value
dc	18
note	Slave the release valve to false-positive or remote vent.
skill	Hacking

Effect

description: Neurotoxin cloud in a 20-ft radius.

Field	Value
description	Neurotoxin cloud in a 20-ft radius.
modifier	-2d6 toxic
target	hp

description: Cloud type set by corp loadout.

Field	Value
description	Cloud type set by corp loadout.
modifier	Unconscious 1d4 rounds (knockout) or Stunned 1 round (toxin)
target	condition

description: Tearing and blurred sight as gas clears.

Field	Value
description	Tearing and blurred sight as gas clears.
modifier	Blinded 1 round
target	vision

Mitigation

description: Engineering vent before crossing, or sealed suit to null the save DC.

Field	Value
description	Engineering vent before crossing, or sealed suit to null the save DC.

description: One-use chemsuit stimulant +5 to save and clears the condition at end of next round.

Field	Value
description	One-use chemsuit stimulant +5 to save and clears the condition at end of next round.

Severity Tiers

damage: no hp loss, Unconscious 1d4 rounds

Field	Value
damage	no hp loss, Unconscious 1d4 rounds
saveDc	14
tier	knockout

damage: 1d6 toxic + blinded 1 round

Field	Value
damage	1d6 toxic + blinded 1 round
saveDc	15
tier	irritant

damage: 3d6 toxic + Unconscious 1d4 rounds

Field	Value
damage	3d6 toxic + Unconscious 1d4 rounds
saveDc	18
tier	neurotoxin