| http://www.w3.org/ns/prov#value | - Specifically, the sensor 420 can include photosensor with a light source, such as a light emitting diode (LED), and a light receiver, such as a charge-coupled device (CCD), photodiode, a junction field effect transistor (JFET) type optical sensor, or a complementary metal-oxide semiconductor (CMOS) type optical sensor.
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