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Electrical

Siren Light

A spinning warning light for alarm circuits. It makes no sound, so the group inside sees the alert and the neighbours outside hear nothing.

Characteristics

Category
Electrical
Stack size
5
Workbench
Level 1
Craftable
Yes
Researchable
Yes · 15 Scrap
Health
75

Overview

In-game description
A spinning siren light

A beam turning in the corner of your eye gets through even when your headset is full of gunfire and Discord. That is the siren light's job: show the people inside that a sensor fired, without telling the whole street. It gives light and nothing else, so for noise you would wire an audio alarm next to it.

  1. Aim a laser detector across the roof or the gap behind your compound wall and feed it from your battery.
  2. Run its output into the input that starts a timer, with the timer's power input on the same battery.
  3. Wire the timer's output to the siren with the wire tool and place the siren where the group sits, the craft room or the core.

Straight from the laser, the siren only spins while someone stands in the beam, and a raider running across the roof is through it in a second. The timer keeps it turning long enough for somebody to look up from the workbench.

It is a Level 1 craft for 120 metal fragments, so one per floor costs next to nothing.

Raid cost

Explosive Quantity Sulfur
Explosive 5.56 Rifle Ammo cheapest 25–26 650
Satchel Charge 2 960
High Velocity Rocket 5 1,000
Beancan Grenade 9 1,080
Rocket 1 1,400
Timed Explosive Charge 1 2,200
Other ways: siege weapons, vehicles and loot
Torpedo 13 180
Propane Explosive Bomb 1 900
Survey Charge 19 1,140
Mortar Shell 3 1,200
Homing Missile 15 1,600
MLRS Rocket 1 —
40mm HE Grenade 5 —
Hammerhead Bolt 6 —

Direct hit, hard side, no duds. Satchel Charge is a dud 20% of the time. Beancan Grenade is a dud 15% of the time. A range runs from point blank to the far end of the bullet's falloff, fired from an Assault Rifle.

Crafting

×120 Metal Fragments
×1 Siren Light
Workbench level
Level 1
Crafting time
15 s
Research cost
15 Scrap

Recycling

Recycler

At power grid stage 2 a green recycler works at 60% instead of 50%. Yields depend on the recycler.

How to get

  • Craft

    at a Level 1 Workbench

  • Research

    15 Scrap at a Research Table