the.com/smoke alarm
a small ceiling tyrant that cannot tell toast from tragedy.
means a sensor that detects smoke particles in the air and screams before fire can spread.
from grew out of ionization chamber tech developed for nuclear radiation detection in the 1930s, repurposed for home safety once cheap enough to mass produce by the 1970s.
ionization typeuses a speck of americium-241, radioactive
photoelectric typedetects smoke by scattered light beam
chirp timinglow battery chirp often hits at 3am
false alarmsbacon is a leading domestic trigger