St. Charles, IL (February 19, 2015) – System Sensor’s Aspirating Smoke Detection Application Guide is available for download. It covers detailed application ...
This home smoke detector circuit warns the user against fire accidents. It relies on the smoke that is produced in the event of a fire and passes between a bulb and an LDR, the amount of light falling ...
At the heart of this ultra simple smoke alarm is H21A1, which is a photo-interrupter module consists of a gallium-arsenide infrared LED coupled to a silicon phototransistor in a plastic housing. The ...
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