AVONDALE, Ariz. - The official preseason test for the Verizon IndyCar Series, the two-day Test in the West at Phoenix International Raceway, is in the books. More testing will follow at Sebring ...
(Passive InfraRed sensor) A device used to detect motion by receiving infrared radiation. When a person walks past the sensor, it detects a rapid change of infrared energy and sends a signal. PIR ...
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