R9-73L-05-R-24
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30792002-R9-73L-05-R-24
LED Panel Mount Indicators 24VDC Red Diffused 2.0 Forward Voltage
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
the angle at which a display can be viewed with acceptable visual performance.
In photometry, luminous intensity is a measure of the wavelength-weighted power emitted by a light source in a particular direction per unit solid angle, based on the luminosity function, a standardized model of the sensitivity of the human eye.
affect how much visible light reaches people's eyes, how well people see other colors and how well they see contrasts.