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Electrical

HBHF Sensor

Counts the people around it: by its own text it passes on as much power as there are humans within 10 m. Counters and alarms love it.

Characteristics

Category
Electrical
Stack size
5
Workbench
Level 2
Craftable
Yes
Researchable
Yes · 30 Scrap
Health
200

Overview

In-game description
A Heartbeat, Breathing, Humidity and Footstep sensor. Passthrough is equal to the number of humans detected in a 10m radius

Heartbeat, breathing, humidity and footsteps: the name lists what it listens for, and the game's text adds the useful part. It passes on power equal to the number of humans it detects within 10 metres. One roamer at your wall gives a weak signal, a full group a stronger one.

That makes it a headcount. Players wire its output into a counter in the main room, and a glance at the display tells them how many people are standing outside the door before anyone opens it. The same output into a smart alarm gets you a ping on your phone instead.

Unlike a laser detector, it does not need a clear line, and that cuts both ways. Mounted next to your crafting room, it fires every time your own group walks past, unless you set it to leave authorised players out. Put it by the outer wall or the compound gate, where your team rarely stands around.

Seventy-five metal fragments and thirty scrap to learn, the same as the laser.

Raid cost

Explosive Quantity Sulfur
Explosive 5.56 Rifle Ammo cheapest 67–69 1,700–1,750
Timed Explosive Charge 1 2,200
Satchel Charge 5 2,400
High Velocity Rocket 13 2,600
Rocket 2 2,800
Beancan Grenade 24 2,880
Other ways: siege weapons, vehicles and loot
Torpedo 33 420
Propane Explosive Bomb 2 1,800
Mortar Shell 7 2,400
Survey Charge 49 2,940
Homing Missile 39 4,000
MLRS Rocket 2 —
40mm HE Grenade 12 —
Hammerhead Bolt 16 —

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

×75 Metal Fragments
×1 HBHF Sensor
Workbench level
Level 2
Crafting time
25 s
Research cost
30 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 2 Workbench

  • Research

    30 Scrap at a Research Table