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AvantGuard's Industry Glossary

Optical Detection (Photoelectric)

A type of smoke detection that is better at detecting smoky or smoldering fires as it detects changes in light. when a room fills with smoke there is less light available to the optical sensor in the smoke detector and an alarm is triggered. this type of smoke detector is not as good at detecting flaming fires because there won’t be enough of a light change to set off the device.