equipment$25–45used in 1 side quest
Portable carbon monoxide detector
Battery-powered alarm that detects invisible carbon monoxide gas in enclosed spaces. Essential because CO poisoning causes confusion before you realize you're in danger.
What to look for
- 1Electrochemical sensor (not biomimetic or metal oxide for faster response)
- 2Battery-powered with low-battery warning
- 3Digital readout showing CO concentration in PPM
- 485+ decibel alarm loud enough to hear over ambient noise
- 5Compact enough to clip to bag or belt
Skip
- Units requiring AC power—you need battery operation in abandoned spaces
- Combination smoke/CO detectors—they're bulkier than necessary for urban exploration
Used for: Detecting CO from old furnaces or generators · Testing enclosed industrial spaces · Monitoring air quality in basements or tunnels