For fire & security estimators
Fire alarm layouts are a family of near-identical circles: smoke, heat, multi-criteria, sounder bases. Getting the split right matters: devices are priced per type, and the difference is a tag letter or an inner stroke. EasyTakeoff reads both.
Where counts go wrong
Smoke, heat and sounder symbols share the same outer circle. EasyTakeoff tells them apart reliably, including by the device tag letters (SD, HD, S) drawn inside, which count toward what the symbol is rather than being ignored.
CAD exports often produce drawings where no text is selectable, tags included. EasyTakeoff still reads them: a detector tagged HD counts as heat, even on PDFs where copy-paste finds nothing.
Loop wiring, zone boundaries and device address labels crowd every symbol. EasyTakeoff counts the device itself; the loop passing through a detector doesn't change what it is.
Every count is traceable to its locations, so reconciling your device schedule against the cause-and-effect matrix is a click-through, not a recount.
In practice
Upload the fire alarm layouts; the legend's device rows become your classes, tags included. The engine counts each type across the floors, look-alikes land in review with zoomed thumbnails, and the AI adjudicator can pre-sort them before you decide. Export the device schedule when the last sheet is finalized.